From cc3983d8ab174ca43d5817f16c489b3cce3a795a Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Fri, 7 Dec 2012 12:45:06 +0100
Subject: mac80211: fix ieee80211_ie_build_vht_cap indentation

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/util.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'net/mac80211/util.c')

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index f11e8c540db4..051313f0d1c2 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1864,7 +1864,7 @@ u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
 }
 
 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
-							   u32 cap)
+			       u32 cap)
 {
 	__le32 tmp;
 
-- 
cgit v1.2.3


From 529ba6e9313dbe60dab7e72c6fdf647a012e9f5b Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 13 Dec 2012 17:16:45 +0100
Subject: mac80211: clean up association better in suspend

When suspending, bss_info_changed() is called to
disable beacons, but managed mode interfaces are
simply removed (bss_info_changed() is called with
"no change" only). This can lead to problems.

To fix this and copy the BSS configuration, clear
it during suspend and restore it on resume.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/ieee80211_i.h |  5 +++++
 net/mac80211/pm.c          | 19 ++++++++++++++++---
 net/mac80211/util.c        |  5 +++++
 3 files changed, 26 insertions(+), 3 deletions(-)

(limited to 'net/mac80211/util.c')

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index fa6d43e6197f..38e7883cff23 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -783,6 +783,11 @@ struct ieee80211_sub_if_data {
 		struct dentry *default_mgmt_key;
 	} debugfs;
 #endif
+
+#ifdef CONFIG_PM
+	struct ieee80211_bss_conf suspend_bss_conf;
+#endif
+
 	/* must be last, dynamically sized area in this! */
 	struct ieee80211_vif vif;
 };
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index f3217831d236..712c17ff6e22 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -121,6 +121,8 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 
 	/* remove all interfaces */
 	list_for_each_entry(sdata, &local->interfaces, list) {
+		u32 changed = BSS_CHANGED_BEACON_ENABLED;
+
 		if (!ieee80211_sdata_running(sdata))
 			continue;
 
@@ -129,14 +131,25 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 		case NL80211_IFTYPE_MONITOR:
 			/* skip these */
 			continue;
+		case NL80211_IFTYPE_STATION:
+			if (sdata->vif.bss_conf.assoc)
+				changed = BSS_CHANGED_ASSOC |
+					  BSS_CHANGED_BSSID |
+					  BSS_CHANGED_IDLE;
+			else
+				changed = 0;
+			/* fall through */
 		default:
 			ieee80211_quiesce(sdata);
 			break;
 		}
 
-		/* disable beaconing */
-		ieee80211_bss_info_change_notify(sdata,
-			BSS_CHANGED_BEACON_ENABLED);
+		sdata->suspend_bss_conf = sdata->vif.bss_conf;
+		memset(&sdata->vif.bss_conf, 0, sizeof(sdata->vif.bss_conf));
+		sdata->vif.bss_conf.idle = true;
+
+		/* disable beaconing or remove association */
+		ieee80211_bss_info_change_notify(sdata, changed);
 
 		if (sdata->vif.type == NL80211_IFTYPE_AP &&
 		    rcu_access_pointer(sdata->u.ap.beacon))
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 051313f0d1c2..2e2e13bf96b2 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1526,6 +1526,11 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 			  BSS_CHANGED_IDLE |
 			  BSS_CHANGED_TXPOWER;
 
+#ifdef CONFIG_PM
+		if (local->resuming)
+			sdata->vif.bss_conf = sdata->suspend_bss_conf;
+#endif
+
 		switch (sdata->vif.type) {
 		case NL80211_IFTYPE_STATION:
 			changed |= BSS_CHANGED_ASSOC |
-- 
cgit v1.2.3


From 8da349329ae52462253052f804ef30d086c9911a Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Fri, 14 Dec 2012 14:17:26 +0100
Subject: mac80211: reconfig bss_info_changed only if beaconing

For AP/IBSS/mesh interfaces, call the driver to reconfigure
bss_info_changed only if the interface was beaconing before
suspend, otherwise we call the driver and it might interpret
the change as going from enabled to disabled.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/util.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'net/mac80211/util.c')

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 2e2e13bf96b2..e27c89c27bf4 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1555,9 +1555,11 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 
 			/* fall through */
 		case NL80211_IFTYPE_MESH_POINT:
-			changed |= BSS_CHANGED_BEACON |
-				   BSS_CHANGED_BEACON_ENABLED;
-			ieee80211_bss_info_change_notify(sdata, changed);
+			if (sdata->vif.bss_conf.enable_beacon) {
+				changed |= BSS_CHANGED_BEACON |
+					   BSS_CHANGED_BEACON_ENABLED;
+				ieee80211_bss_info_change_notify(sdata, changed);
+			}
 			break;
 		case NL80211_IFTYPE_WDS:
 			break;
-- 
cgit v1.2.3


From c82c4a80bbb9c8ffa1d783070a8caa37f2db45b6 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 18 Jul 2012 13:31:31 +0200
Subject: mac80211: split aggregation stop by reason

The initiator/tx doesn't really identify why an
aggregation session is stopped, give a reason
for stopping that more clearly identifies what's
going on. This will help tell the driver clearly
what is expected of it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/agg-tx.c      | 17 ++++++++---------
 net/mac80211/ht.c          | 15 ++++++++-------
 net/mac80211/ieee80211_i.h |  9 ++++-----
 net/mac80211/mlme.c        |  2 +-
 net/mac80211/pm.c          |  3 ++-
 net/mac80211/sta_info.c    |  2 +-
 net/mac80211/sta_info.h    |  7 +++++++
 net/mac80211/util.c        |  3 ++-
 8 files changed, 33 insertions(+), 25 deletions(-)

(limited to 'net/mac80211/util.c')

diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index eb9df22418f0..e0656d77b313 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -150,8 +150,7 @@ void ieee80211_assign_tid_tx(struct sta_info *sta, int tid,
 }
 
 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
-				    enum ieee80211_back_parties initiator,
-				    bool tx)
+				    enum ieee80211_agg_stop_reason reason)
 {
 	struct ieee80211_local *local = sta->local;
 	struct tid_ampdu_tx *tid_tx;
@@ -212,8 +211,10 @@ int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
 	 */
 	synchronize_net();
 
-	tid_tx->stop_initiator = initiator;
-	tid_tx->tx_stop = tx;
+	tid_tx->stop_initiator = reason == AGG_STOP_PEER_REQUEST ?
+					WLAN_BACK_RECIPIENT :
+					WLAN_BACK_INITIATOR;
+	tid_tx->tx_stop = reason == AGG_STOP_LOCAL_REQUEST;
 
 	ret = drv_ampdu_action(local, sta->sdata,
 			       IEEE80211_AMPDU_TX_STOP,
@@ -660,14 +661,13 @@ void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif,
 EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe);
 
 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
-				   enum ieee80211_back_parties initiator,
-				   bool tx)
+				   enum ieee80211_agg_stop_reason reason)
 {
 	int ret;
 
 	mutex_lock(&sta->ampdu_mlme.mtx);
 
-	ret = ___ieee80211_stop_tx_ba_session(sta, tid, initiator, tx);
+	ret = ___ieee80211_stop_tx_ba_session(sta, tid, reason);
 
 	mutex_unlock(&sta->ampdu_mlme.mtx);
 
@@ -868,8 +868,7 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local,
 		}
 
 	} else {
-		___ieee80211_stop_tx_ba_session(sta, tid, WLAN_BACK_INITIATOR,
-						false);
+		___ieee80211_stop_tx_ba_session(sta, tid, AGG_STOP_DECLINED);
 	}
 
  out:
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index 8a6d68f1f404..df46cd8e55f5 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -182,16 +182,19 @@ void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
 	ieee80211_apply_htcap_overrides(sdata, ht_cap);
 }
 
-void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx)
+void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
+					 enum ieee80211_agg_stop_reason reason)
 {
 	int i;
 
 	cancel_work_sync(&sta->ampdu_mlme.work);
 
 	for (i = 0; i <  IEEE80211_NUM_TIDS; i++) {
-		__ieee80211_stop_tx_ba_session(sta, i, WLAN_BACK_INITIATOR, tx);
+		__ieee80211_stop_tx_ba_session(sta, i, reason);
 		__ieee80211_stop_rx_ba_session(sta, i, WLAN_BACK_RECIPIENT,
-					       WLAN_REASON_QSTA_LEAVE_QBSS, tx);
+					       WLAN_REASON_QSTA_LEAVE_QBSS,
+					       reason != AGG_STOP_DESTROY_STA &&
+					       reason != AGG_STOP_PEER_REQUEST);
 	}
 }
 
@@ -248,8 +251,7 @@ void ieee80211_ba_session_work(struct work_struct *work)
 		if (tid_tx && test_and_clear_bit(HT_AGG_STATE_WANT_STOP,
 						 &tid_tx->state))
 			___ieee80211_stop_tx_ba_session(sta, tid,
-							WLAN_BACK_INITIATOR,
-							true);
+							AGG_STOP_LOCAL_REQUEST);
 	}
 	mutex_unlock(&sta->ampdu_mlme.mtx);
 }
@@ -317,8 +319,7 @@ void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
 		__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_INITIATOR, 0,
 					       true);
 	else
-		__ieee80211_stop_tx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
-					       true);
+		__ieee80211_stop_tx_ba_session(sta, tid, AGG_STOP_PEER_REQUEST);
 }
 
 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 7182907e282a..0fa44a965ad9 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1432,7 +1432,8 @@ void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
 				     u16 initiator, u16 reason, bool stop);
 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
 				    u16 initiator, u16 reason, bool stop);
-void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
+void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
+					 enum ieee80211_agg_stop_reason reason);
 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
 			     struct sta_info *sta,
 			     struct ieee80211_mgmt *mgmt, size_t len);
@@ -1446,11 +1447,9 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
 				     size_t len);
 
 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
-				   enum ieee80211_back_parties initiator,
-				   bool tx);
+				   enum ieee80211_agg_stop_reason reason);
 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
-				    enum ieee80211_back_parties initiator,
-				    bool tx);
+				    enum ieee80211_agg_stop_reason reason);
 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
 void ieee80211_ba_session_work(struct work_struct *work);
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 6ffbf701de95..d90c07b1795f 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1525,7 +1525,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 	sta = sta_info_get(sdata, ifmgd->bssid);
 	if (sta) {
 		set_sta_flag(sta, WLAN_STA_BLOCK_BA);
-		ieee80211_sta_tear_down_BA_sessions(sta, false);
+		ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA);
 	}
 	mutex_unlock(&local->sta_mtx);
 
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index f81fd30581d9..e45b83610e85 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -42,7 +42,8 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 		mutex_lock(&local->sta_mtx);
 		list_for_each_entry(sta, &local->sta_list, list) {
 			set_sta_flag(sta, WLAN_STA_BLOCK_BA);
-			ieee80211_sta_tear_down_BA_sessions(sta, true);
+			ieee80211_sta_tear_down_BA_sessions(
+					sta, AGG_STOP_LOCAL_REQUEST);
 		}
 		mutex_unlock(&local->sta_mtx);
 	}
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 738f9349c0a2..9d864ed5f3da 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -784,7 +784,7 @@ int __must_check __sta_info_destroy(struct sta_info *sta)
 	 * will be sufficient.
 	 */
 	set_sta_flag(sta, WLAN_STA_BLOCK_BA);
-	ieee80211_sta_tear_down_BA_sessions(sta, false);
+	ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA);
 
 	ret = sta_info_hash_del(local, sta);
 	if (ret)
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 031e4a5bbeca..af7d78aa5523 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -92,6 +92,13 @@ enum ieee80211_sta_info_flags {
 #define HT_AGG_STATE_WANT_START		4
 #define HT_AGG_STATE_WANT_STOP		5
 
+enum ieee80211_agg_stop_reason {
+	AGG_STOP_DECLINED,
+	AGG_STOP_LOCAL_REQUEST,
+	AGG_STOP_PEER_REQUEST,
+	AGG_STOP_DESTROY_STA,
+};
+
 /**
  * struct tid_ampdu_tx - TID aggregation information (Tx).
  *
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index e27c89c27bf4..1b9420730d8c 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1639,7 +1639,8 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 		mutex_lock(&local->sta_mtx);
 
 		list_for_each_entry(sta, &local->sta_list, list) {
-			ieee80211_sta_tear_down_BA_sessions(sta, true);
+			ieee80211_sta_tear_down_BA_sessions(
+					sta, AGG_STOP_LOCAL_REQUEST);
 			clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
 		}
 
-- 
cgit v1.2.3


From d888130a024d1d1e8b2c3d0c9841a218fc0aed9e Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 10 Jan 2013 23:55:33 +0100
Subject: mac80211: fix resume from WoWLAN

My commit 529ba6e9313dbe60dab7e72c6fdf647a012e9f5b
("mac80211: clean up association better in suspend")
introduced a bug when resuming from WoWLAN when a
device reset is desired. This case must not use the
suspend_bss_conf as it hasn't been stored.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/util.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'net/mac80211/util.c')

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 1b9420730d8c..0ad51e14f3c8 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1358,8 +1358,9 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	struct ieee80211_chanctx *ctx;
 	struct sta_info *sta;
 	int res, i;
-
 #ifdef CONFIG_PM
+	bool reconfig_due_to_wowlan = false;
+
 	if (local->suspended)
 		local->resuming = true;
 
@@ -1377,6 +1378,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 		 * res is 1, which means the driver requested
 		 * to go through a regular reset on wakeup.
 		 */
+		reconfig_due_to_wowlan = true;
 	}
 #endif
 	/* everything else happens only if HW was up & running */
@@ -1527,7 +1529,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 			  BSS_CHANGED_TXPOWER;
 
 #ifdef CONFIG_PM
-		if (local->resuming)
+		if (local->resuming && !reconfig_due_to_wowlan)
 			sdata->vif.bss_conf = sdata->suspend_bss_conf;
 #endif
 
-- 
cgit v1.2.3


From 8f21b0adfe95907926da1bb0bcd3382b13d0143d Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Fri, 11 Jan 2013 00:28:01 +0100
Subject: mac80211: call restart complete at wowlan resume time

When the driver's resume function can't completely
restore the configuration in the device, it returns
1 from the callback which will be treated like a HW
restart request, but done directly.

In this case, also call the driver's restart_complete()
function so it can finish the reconfiguration there.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 include/net/mac80211.h | 5 ++++-
 net/mac80211/util.c    | 7 ++++---
 2 files changed, 8 insertions(+), 4 deletions(-)

(limited to 'net/mac80211/util.c')

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 79bc8709e83b..3037f49e51c8 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -2488,7 +2488,10 @@ enum ieee80211_rate_control_changed {
  *
  * @restart_complete: Called after a call to ieee80211_restart_hw(), when the
  *	reconfiguration has completed. This can help the driver implement the
- *	reconfiguration step. This callback may sleep.
+ *	reconfiguration step. Also called when reconfiguring because the
+ *	driver's resume function returned 1, as this is just like an "inline"
+ *	hardware restart. This callback may sleep.
+ *
  */
 struct ieee80211_ops {
 	void (*tx)(struct ieee80211_hw *hw,
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 0ad51e14f3c8..7519018ff71a 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1358,9 +1358,9 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	struct ieee80211_chanctx *ctx;
 	struct sta_info *sta;
 	int res, i;
-#ifdef CONFIG_PM
 	bool reconfig_due_to_wowlan = false;
 
+#ifdef CONFIG_PM
 	if (local->suspended)
 		local->resuming = true;
 
@@ -1656,10 +1656,11 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	 * If this is for hw restart things are still running.
 	 * We may want to change that later, however.
 	 */
-	if (!local->suspended) {
+	if (!local->suspended || reconfig_due_to_wowlan)
 		drv_restart_complete(local);
+
+	if (!local->suspended)
 		return 0;
-	}
 
 #ifdef CONFIG_PM
 	/* first set suspended false, then resuming */
-- 
cgit v1.2.3


From c65dd1477b6fe5971489dd8b6e28a07ec277fdd6 Mon Sep 17 00:00:00 2001
From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date: Wed, 12 Dec 2012 10:12:24 +0200
Subject: mac80211: inform the driver about update of dtim_period

Currently, when the driver requires the DTIM period,
mac80211 will wait to hear a beacon before association.
This behavior is suboptimal since some drivers may be
able to deal with knowing the DTIM period after the
association, if they get it at all.

To address this, notify the drivers with bss_info_changed
with the new BSS_CHANGED_DTIM_PERIOD flag when the DTIM
becomes known. This might be when changing to associated,
or later when the entire association was done with only
probe response information.

Rename the hardware flag for the current behaviour to
IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC to more accurately
reflect its behaviour. IEEE80211_HW_NEED_DTIM_PERIOD is
no longer accurate as all drivers get the DTIM period
now, just not before association.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 drivers/net/wireless/ath/carl9170/main.c    |  2 +-
 drivers/net/wireless/iwlegacy/4965-mac.c    |  2 +-
 drivers/net/wireless/iwlwifi/dvm/mac80211.c |  2 +-
 include/net/mac80211.h                      | 16 ++++---
 net/mac80211/debugfs.c                      |  4 +-
 net/mac80211/ieee80211_i.h                  |  2 +-
 net/mac80211/mlme.c                         | 74 +++++++++++++++++------------
 net/mac80211/util.c                         |  4 ++
 8 files changed, 63 insertions(+), 43 deletions(-)

(limited to 'net/mac80211/util.c')

diff --git a/drivers/net/wireless/ath/carl9170/main.c b/drivers/net/wireless/ath/carl9170/main.c
index ef82751722e0..f293b3ff4756 100644
--- a/drivers/net/wireless/ath/carl9170/main.c
+++ b/drivers/net/wireless/ath/carl9170/main.c
@@ -1853,7 +1853,7 @@ void *carl9170_alloc(size_t priv_size)
 		     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 		     IEEE80211_HW_SUPPORTS_PS |
 		     IEEE80211_HW_PS_NULLFUNC_STACK |
-		     IEEE80211_HW_NEED_DTIM_PERIOD |
+		     IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC |
 		     IEEE80211_HW_SIGNAL_DBM;
 
 	if (!modparam_noht) {
diff --git a/drivers/net/wireless/iwlegacy/4965-mac.c b/drivers/net/wireless/iwlegacy/4965-mac.c
index f1dc04006564..d3cc776d2d34 100644
--- a/drivers/net/wireless/iwlegacy/4965-mac.c
+++ b/drivers/net/wireless/iwlegacy/4965-mac.c
@@ -5711,7 +5711,7 @@ il4965_mac_setup_register(struct il_priv *il, u32 max_probe_length)
 	/* Tell mac80211 our characteristics */
 	hw->flags =
 	    IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_AMPDU_AGGREGATION |
-	    IEEE80211_HW_NEED_DTIM_PERIOD | IEEE80211_HW_SPECTRUM_MGMT |
+	    IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC | IEEE80211_HW_SPECTRUM_MGMT |
 	    IEEE80211_HW_REPORTS_TX_ACK_STATUS | IEEE80211_HW_SUPPORTS_PS |
 	    IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
 	if (il->cfg->sku & IL_SKU_N)
diff --git a/drivers/net/wireless/iwlwifi/dvm/mac80211.c b/drivers/net/wireless/iwlwifi/dvm/mac80211.c
index fa43c0d6abe2..8e5c5c5ce06f 100644
--- a/drivers/net/wireless/iwlwifi/dvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/dvm/mac80211.c
@@ -145,7 +145,7 @@ int iwlagn_mac_setup_register(struct iwl_priv *priv,
 	/* Tell mac80211 our characteristics */
 	hw->flags = IEEE80211_HW_SIGNAL_DBM |
 		    IEEE80211_HW_AMPDU_AGGREGATION |
-		    IEEE80211_HW_NEED_DTIM_PERIOD |
+		    IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC |
 		    IEEE80211_HW_SPECTRUM_MGMT |
 		    IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 		    IEEE80211_HW_QUEUE_CONTROL |
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 7a27e00c513a..398b6ca4a9c5 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -208,6 +208,8 @@ struct ieee80211_chanctx_conf {
  * @BSS_CHANGED_TXPOWER: TX power setting changed for this interface
  * @BSS_CHANGED_P2P_PS: P2P powersave settings (CTWindow, opportunistic PS)
  *	changed (currently only in P2P client mode, GO mode will be later)
+ * @BSS_CHANGED_DTIM_PERIOD: the DTIM period value was changed (set when
+ *	it becomes valid, managed mode only)
  */
 enum ieee80211_bss_change {
 	BSS_CHANGED_ASSOC		= 1<<0,
@@ -230,6 +232,7 @@ enum ieee80211_bss_change {
 	BSS_CHANGED_PS			= 1<<17,
 	BSS_CHANGED_TXPOWER		= 1<<18,
 	BSS_CHANGED_P2P_PS		= 1<<19,
+	BSS_CHANGED_DTIM_PERIOD		= 1<<20,
 
 	/* when adding here, make sure to change ieee80211_reconfig */
 };
@@ -271,9 +274,8 @@ enum ieee80211_rssi_event {
  *	if the hardware cannot handle this it must set the
  *	IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag
  * @dtim_period: num of beacons before the next DTIM, for beaconing,
- *	valid in station mode only while @assoc is true and if also
- *	requested by %IEEE80211_HW_NEED_DTIM_PERIOD (cf. also hw conf
- *	@ps_dtim_period)
+ *	valid in station mode only if after the driver was notified
+ *	with the %BSS_CHANGED_DTIM_PERIOD flag, will be non-zero then.
  * @sync_tsf: last beacon's/probe response's TSF timestamp (could be old
  *	as it may have been received during scanning long ago)
  * @sync_device_ts: the device timestamp corresponding to the sync_tsf,
@@ -1328,9 +1330,9 @@ struct ieee80211_tx_control {
  *      When this flag is set, signaling beacon-loss will cause an immediate
  *      change to disassociated state.
  *
- * @IEEE80211_HW_NEED_DTIM_PERIOD:
- *	This device needs to know the DTIM period for the BSS before
- *	associating.
+ * @IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC:
+ *	This device needs to get data from beacon before association (i.e.
+ *	dtim_period).
  *
  * @IEEE80211_HW_SUPPORTS_PER_STA_GTK: The device's crypto engine supports
  *	per-station GTKs as used by IBSS RSN or during fast transition. If
@@ -1375,7 +1377,7 @@ enum ieee80211_hw_flags {
 	IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE	= 1<<4,
 	IEEE80211_HW_SIGNAL_UNSPEC			= 1<<5,
 	IEEE80211_HW_SIGNAL_DBM				= 1<<6,
-	IEEE80211_HW_NEED_DTIM_PERIOD			= 1<<7,
+	IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC		= 1<<7,
 	IEEE80211_HW_SPECTRUM_MGMT			= 1<<8,
 	IEEE80211_HW_AMPDU_AGGREGATION			= 1<<9,
 	IEEE80211_HW_SUPPORTS_PS			= 1<<10,
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index 466f4b45dd94..8e6040998ba6 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -121,8 +121,8 @@ static ssize_t hwflags_read(struct file *file, char __user *user_buf,
 		sf += snprintf(buf + sf, mxln - sf, "SIGNAL_UNSPEC\n");
 	if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
 		sf += snprintf(buf + sf, mxln - sf, "SIGNAL_DBM\n");
-	if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD)
-		sf += snprintf(buf + sf, mxln - sf, "NEED_DTIM_PERIOD\n");
+	if (local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC)
+		sf += snprintf(buf + sf, mxln - sf, "NEED_DTIM_BEFORE_ASSOC\n");
 	if (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)
 		sf += snprintf(buf + sf, mxln - sf, "SPECTRUM_MGMT\n");
 	if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 2f50be7eea09..5ce0b6b6e182 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -399,7 +399,7 @@ struct ieee80211_mgd_assoc_data {
 	u8 ssid_len;
 	u8 supp_rates_len;
 	bool wmm, uapsd;
-	bool have_beacon;
+	bool have_beacon, need_beacon;
 	bool synced;
 
 	u8 ap_ht_param;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index d79b9cd72fc5..a5dba67bbe0b 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1445,7 +1445,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
 
 	ieee80211_led_assoc(local, 1);
 
-	if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) {
+	if (sdata->u.mgd.assoc_data->have_beacon) {
 		/*
 		 * If the AP is buggy we may get here with no DTIM period
 		 * known, so assume it's 1 which is the only safe assumption
@@ -1453,6 +1453,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
 		 * probably just won't work at all.
 		 */
 		bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
+		bss_info_changed |= BSS_CHANGED_DTIM_PERIOD;
 	} else {
 		bss_conf->dtim_period = 0;
 	}
@@ -2548,13 +2549,14 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	chan = chanctx_conf->def.chan;
 	rcu_read_unlock();
 
-	if (ifmgd->assoc_data && !ifmgd->assoc_data->have_beacon &&
+	if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
 	    ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
 		ieee802_11_parse_elems(mgmt->u.beacon.variable,
 				       len - baselen, &elems);
 
 		ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
 		ifmgd->assoc_data->have_beacon = true;
+		ifmgd->assoc_data->need_beacon = false;
 		/* continue assoc process */
 		ifmgd->assoc_data->timeout = jiffies;
 		run_again(ifmgd, ifmgd->assoc_data->timeout);
@@ -2711,6 +2713,19 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 				     elems.wmm_param_len))
 		changed |= BSS_CHANGED_QOS;
 
+	/*
+	 * If we haven't had a beacon before, tell the driver about the
+	 * DTIM period now.
+	 */
+	if (!bss_conf->dtim_period) {
+		/* a few bogus AP send dtim_period = 0 or no TIM IE */
+		if (elems.tim)
+			bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
+		else
+			bss_conf->dtim_period = 1;
+		changed |= BSS_CHANGED_DTIM_PERIOD;
+	}
+
 	if (elems.erp_info && elems.erp_info_len >= 1) {
 		erp_valid = true;
 		erp_value = elems.erp_info[0];
@@ -2989,7 +3004,8 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 
 	if (ifmgd->assoc_data &&
 	    time_after(jiffies, ifmgd->assoc_data->timeout)) {
-		if (!ifmgd->assoc_data->have_beacon ||
+		if ((ifmgd->assoc_data->need_beacon &&
+		     !ifmgd->assoc_data->have_beacon) ||
 		    ieee80211_do_assoc(sdata)) {
 			u8 bssid[ETH_ALEN];
 
@@ -3776,6 +3792,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	struct ieee80211_bss *bss = (void *)req->bss->priv;
 	struct ieee80211_mgd_assoc_data *assoc_data;
+	const struct cfg80211_bss_ies *beacon_ies;
 	struct ieee80211_supported_band *sband;
 	const u8 *ssidie, *ht_ie, *vht_ie;
 	int i, err;
@@ -3941,38 +3958,35 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 	if (err)
 		goto err_clear;
 
-	if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) {
-		const struct cfg80211_bss_ies *beacon_ies;
+	rcu_read_lock();
+	beacon_ies = rcu_dereference(req->bss->beacon_ies);
 
-		rcu_read_lock();
-		beacon_ies = rcu_dereference(req->bss->beacon_ies);
-		if (!beacon_ies) {
-			/*
-			 * Wait up to one beacon interval ...
-			 * should this be more if we miss one?
-			 */
-			sdata_info(sdata, "waiting for beacon from %pM\n",
-				   ifmgd->bssid);
-			assoc_data->timeout =
-				TU_TO_EXP_TIME(req->bss->beacon_interval);
-		} else {
-			const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
-							    beacon_ies->data,
-							    beacon_ies->len);
-			if (tim_ie && tim_ie[1] >=
-					sizeof(struct ieee80211_tim_ie)) {
-				const struct ieee80211_tim_ie *tim;
-				tim = (void *)(tim_ie + 2);
-				ifmgd->dtim_period = tim->dtim_period;
-			}
-			assoc_data->have_beacon = true;
-			assoc_data->timeout = jiffies;
+	if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC &&
+	    !beacon_ies) {
+		/*
+		 * Wait up to one beacon interval ...
+		 * should this be more if we miss one?
+		 */
+		sdata_info(sdata, "waiting for beacon from %pM\n",
+			   ifmgd->bssid);
+		assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
+		assoc_data->need_beacon = true;
+	} else if (beacon_ies) {
+		const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
+						    beacon_ies->data,
+						    beacon_ies->len);
+		if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) {
+			const struct ieee80211_tim_ie *tim;
+			tim = (void *)(tim_ie + 2);
+			ifmgd->dtim_period = tim->dtim_period;
 		}
-		rcu_read_unlock();
-	} else {
 		assoc_data->have_beacon = true;
 		assoc_data->timeout = jiffies;
+	} else {
+		assoc_data->timeout = jiffies;
 	}
+	rcu_read_unlock();
+
 	run_again(ifmgd, assoc_data->timeout);
 
 	if (bss->corrupt_data) {
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 7519018ff71a..1c74512697f0 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1538,6 +1538,10 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 			changed |= BSS_CHANGED_ASSOC |
 				   BSS_CHANGED_ARP_FILTER |
 				   BSS_CHANGED_PS;
+
+			if (sdata->u.mgd.dtim_period)
+				changed |= BSS_CHANGED_DTIM_PERIOD;
+
 			mutex_lock(&sdata->u.mgd.mtx);
 			ieee80211_bss_info_change_notify(sdata, changed);
 			mutex_unlock(&sdata->u.mgd.mtx);
-- 
cgit v1.2.3


From 1672c0e31917f49d31d30d79067103432bc20cc7 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Tue, 29 Jan 2013 15:02:27 +0100
Subject: mac80211: start auth/assoc timeout on frame status

When sending authentication/association frames they
might take a bit of time to go out because we may
have to synchronise with the AP, in particular in
the case where it's really a P2P GO. In this case
the 200ms fixed timeout could potentially be too
short if the beacon interval is relatively large.

For drivers that report TX status we can do better.
Instead of starting the timeout directly, start it
only when the frame status arrives. Since then the
frame was out on the air, we can wait shorter (the
typical response time is supposed to be 30ms, wait
100ms.) Also, if the frame failed to be transmitted
try again right away instead of waiting.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 include/net/mac80211.h     |  5 ++-
 net/mac80211/ibss.c        |  4 +--
 net/mac80211/ieee80211_i.h | 11 ++++--
 net/mac80211/mlme.c        | 85 +++++++++++++++++++++++++++++++++++++++-------
 net/mac80211/scan.c        |  3 +-
 net/mac80211/status.c      | 12 ++++---
 net/mac80211/util.c        | 12 +++----
 7 files changed, 103 insertions(+), 29 deletions(-)

(limited to 'net/mac80211/util.c')

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 398b6ca4a9c5..164fd4b6503c 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -408,6 +408,9 @@ struct ieee80211_bss_conf {
  * @IEEE80211_TX_INTFL_RETRANSMISSION: This frame is being retransmitted
  *	after TX status because the destination was asleep, it must not
  *	be modified again (no seqno assignment, crypto, etc.)
+ * @IEEE80211_TX_INTFL_MLME_CONN_TX: This frame was transmitted by the MLME
+ *	code for connection establishment, this indicates that its status
+ *	should kick the MLME state machine.
  * @IEEE80211_TX_INTFL_NL80211_FRAME_TX: Frame was requested through nl80211
  *	MLME command (internal to mac80211 to figure out whether to send TX
  *	status to user space)
@@ -459,7 +462,7 @@ enum mac80211_tx_control_flags {
 	IEEE80211_TX_CTL_NO_PS_BUFFER		= BIT(17),
 	IEEE80211_TX_CTL_MORE_FRAMES		= BIT(18),
 	IEEE80211_TX_INTFL_RETRANSMISSION	= BIT(19),
-	/* hole at 20, use later */
+	IEEE80211_TX_INTFL_MLME_CONN_TX		= BIT(20),
 	IEEE80211_TX_INTFL_NL80211_FRAME_TX	= BIT(21),
 	IEEE80211_TX_CTL_LDPC			= BIT(22),
 	IEEE80211_TX_CTL_STBC			= BIT(23) | BIT(24),
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index b4b866f41919..a54c8248e0e0 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -302,7 +302,7 @@ static struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta,
 			 "TX Auth SA=%pM DA=%pM BSSID=%pM (auth_transaction=1)\n",
 			 sdata->vif.addr, addr, sdata->u.ibss.bssid);
 		ieee80211_send_auth(sdata, 1, WLAN_AUTH_OPEN, 0, NULL, 0,
-				    addr, sdata->u.ibss.bssid, NULL, 0, 0);
+				    addr, sdata->u.ibss.bssid, NULL, 0, 0, 0);
 	}
 	return sta;
 }
@@ -422,7 +422,7 @@ static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata,
 	 * has actually implemented this.
 	 */
 	ieee80211_send_auth(sdata, 2, WLAN_AUTH_OPEN, 0, NULL, 0,
-			    mgmt->sa, sdata->u.ibss.bssid, NULL, 0, 0);
+			    mgmt->sa, sdata->u.ibss.bssid, NULL, 0, 0, 0);
 }
 
 static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index e4ee16839c6d..c9c66dec170a 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -415,6 +415,10 @@ struct ieee80211_if_managed {
 	bool beacon_crc_valid;
 	u32 beacon_crc;
 
+	bool status_acked;
+	bool status_received;
+	__le16 status_fc;
+
 	enum {
 		IEEE80211_MFP_DISABLED,
 		IEEE80211_MFP_OPTIONAL,
@@ -1284,6 +1288,8 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
+void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
+				  __le16 fc, bool acked);
 
 /* IBSS code */
 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
@@ -1544,7 +1550,8 @@ static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
 			 u16 transaction, u16 auth_alg, u16 status,
 			 u8 *extra, size_t extra_len, const u8 *bssid,
-			 const u8 *da, const u8 *key, u8 key_len, u8 key_idx);
+			 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
+			 u32 tx_flags);
 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
 				    const u8 *bssid, u16 stype, u16 reason,
 				    bool send_frame, u8 *frame_buf);
@@ -1561,7 +1568,7 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
 			      const u8 *ssid, size_t ssid_len,
 			      const u8 *ie, size_t ie_len,
-			      u32 ratemask, bool directed, bool no_cck,
+			      u32 ratemask, bool directed, u32 tx_flags,
 			      struct ieee80211_channel *channel, bool scan);
 
 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index a5dba67bbe0b..4ff52d0aaf9c 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -30,11 +30,13 @@
 #include "rate.h"
 #include "led.h"
 
-#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
-#define IEEE80211_AUTH_MAX_TRIES 3
-#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
-#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
-#define IEEE80211_ASSOC_MAX_TRIES 3
+#define IEEE80211_AUTH_TIMEOUT		(HZ / 5)
+#define IEEE80211_AUTH_TIMEOUT_SHORT	(HZ / 10)
+#define IEEE80211_AUTH_MAX_TRIES	3
+#define IEEE80211_AUTH_WAIT_ASSOC	(HZ * 5)
+#define IEEE80211_ASSOC_TIMEOUT		(HZ / 5)
+#define IEEE80211_ASSOC_TIMEOUT_SHORT	(HZ / 10)
+#define IEEE80211_ASSOC_MAX_TRIES	3
 
 static int max_nullfunc_tries = 2;
 module_param(max_nullfunc_tries, int, 0644);
@@ -644,6 +646,9 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 	drv_mgd_prepare_tx(local, sdata);
 
 	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+	if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+		IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
+						IEEE80211_TX_INTFL_MLME_CONN_TX;
 	ieee80211_tx_skb(sdata, skb);
 }
 
@@ -1707,7 +1712,7 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
 			ssid_len = ssid[1];
 
 		ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL,
-					 0, (u32) -1, true, false,
+					 0, (u32) -1, true, 0,
 					 ifmgd->associated->channel, false);
 		rcu_read_unlock();
 	}
@@ -1937,9 +1942,11 @@ static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
 static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
 				     struct ieee80211_mgmt *mgmt, size_t len)
 {
+	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
 	u8 *pos;
 	struct ieee802_11_elems elems;
+	u32 tx_flags = 0;
 
 	pos = mgmt->u.auth.variable;
 	ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
@@ -1947,11 +1954,14 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
 		return;
 	auth_data->expected_transaction = 4;
 	drv_mgd_prepare_tx(sdata->local, sdata);
+	if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+		tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
+			   IEEE80211_TX_INTFL_MLME_CONN_TX;
 	ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
 			    elems.challenge - 2, elems.challenge_len + 2,
 			    auth_data->bss->bssid, auth_data->bss->bssid,
 			    auth_data->key, auth_data->key_len,
-			    auth_data->key_idx);
+			    auth_data->key_idx, tx_flags);
 }
 
 static enum rx_mgmt_action __must_check
@@ -2869,12 +2879,17 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
+	u32 tx_flags = 0;
 
 	lockdep_assert_held(&ifmgd->mtx);
 
 	if (WARN_ON_ONCE(!auth_data))
 		return -EINVAL;
 
+	if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+		tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
+			   IEEE80211_TX_INTFL_MLME_CONN_TX;
+
 	auth_data->tries++;
 
 	if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
@@ -2911,7 +2926,8 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
 		ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
 				    auth_data->data, auth_data->data_len,
 				    auth_data->bss->bssid,
-				    auth_data->bss->bssid, NULL, 0, 0);
+				    auth_data->bss->bssid, NULL, 0, 0,
+				    tx_flags);
 	} else {
 		const u8 *ssidie;
 
@@ -2930,13 +2946,15 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
 		 * will not answer to direct packet in unassociated state.
 		 */
 		ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
-					 NULL, 0, (u32) -1, true, false,
+					 NULL, 0, (u32) -1, true, tx_flags,
 					 auth_data->bss->channel, false);
 		rcu_read_unlock();
 	}
 
-	auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
-	run_again(ifmgd, auth_data->timeout);
+	if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
+		auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
+		run_again(ifmgd, auth_data->timeout);
+	}
 
 	return 0;
 }
@@ -2967,12 +2985,26 @@ static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
 		   IEEE80211_ASSOC_MAX_TRIES);
 	ieee80211_send_assoc(sdata);
 
-	assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
-	run_again(&sdata->u.mgd, assoc_data->timeout);
+	if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
+		assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
+		run_again(&sdata->u.mgd, assoc_data->timeout);
+	}
 
 	return 0;
 }
 
+void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
+				  __le16 fc, bool acked)
+{
+	struct ieee80211_local *local = sdata->local;
+
+	sdata->u.mgd.status_fc = fc;
+	sdata->u.mgd.status_acked = acked;
+	sdata->u.mgd.status_received = true;
+
+	ieee80211_queue_work(&local->hw, &sdata->work);
+}
+
 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 {
 	struct ieee80211_local *local = sdata->local;
@@ -2980,6 +3012,33 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 
 	mutex_lock(&ifmgd->mtx);
 
+	if (ifmgd->status_received) {
+		__le16 fc = ifmgd->status_fc;
+		bool status_acked = ifmgd->status_acked;
+
+		ifmgd->status_received = false;
+		if (ifmgd->auth_data &&
+		    (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) {
+			if (status_acked) {
+				ifmgd->auth_data->timeout =
+					jiffies + IEEE80211_AUTH_TIMEOUT_SHORT;
+				run_again(ifmgd, ifmgd->auth_data->timeout);
+			} else {
+				ifmgd->auth_data->timeout = jiffies - 1;
+			}
+		} else if (ifmgd->assoc_data &&
+			   (ieee80211_is_assoc_req(fc) ||
+			    ieee80211_is_reassoc_req(fc))) {
+			if (status_acked) {
+				ifmgd->assoc_data->timeout =
+					jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
+				run_again(ifmgd, ifmgd->assoc_data->timeout);
+			} else {
+				ifmgd->assoc_data->timeout = jiffies - 1;
+			}
+		}
+	}
+
 	if (ifmgd->auth_data &&
 	    time_after(jiffies, ifmgd->auth_data->timeout)) {
 		if (ifmgd->auth_data->done) {
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 061595ae513b..85d0e5ee55a2 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -389,7 +389,8 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
 			local->scan_req->ssids[i].ssid_len,
 			local->scan_req->ie, local->scan_req->ie_len,
 			local->scan_req->rates[band], false,
-			local->scan_req->no_cck,
+			local->scan_req->no_cck ?
+				IEEE80211_TX_CTL_NO_CCK_RATE : 0,
 			local->hw.conf.channel, true);
 
 	/*
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index ab50285fcbab..d041de056b7f 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -335,7 +335,8 @@ static void ieee80211_report_used_skb(struct ieee80211_local *local,
 	if (dropped)
 		acked = false;
 
-	if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) {
+	if (info->flags & (IEEE80211_TX_INTFL_NL80211_FRAME_TX |
+			   IEEE80211_TX_INTFL_MLME_CONN_TX)) {
 		struct ieee80211_sub_if_data *sdata = NULL;
 		struct ieee80211_sub_if_data *iter_sdata;
 		u64 cookie = (unsigned long)skb;
@@ -357,10 +358,13 @@ static void ieee80211_report_used_skb(struct ieee80211_local *local,
 			sdata = rcu_dereference(local->p2p_sdata);
 		}
 
-		if (!sdata)
+		if (!sdata) {
 			skb->dev = NULL;
-		else if (ieee80211_is_nullfunc(hdr->frame_control) ||
-			 ieee80211_is_qos_nullfunc(hdr->frame_control)) {
+		} else if (info->flags & IEEE80211_TX_INTFL_MLME_CONN_TX) {
+			ieee80211_mgd_conn_tx_status(sdata, hdr->frame_control,
+						     acked);
+		} else if (ieee80211_is_nullfunc(hdr->frame_control) ||
+			   ieee80211_is_qos_nullfunc(hdr->frame_control)) {
 			cfg80211_probe_status(sdata->dev, hdr->addr1,
 					      cookie, acked, GFP_ATOMIC);
 		} else {
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 1c74512697f0..139ad9b66c39 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1030,7 +1030,8 @@ u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
 			 u16 transaction, u16 auth_alg, u16 status,
 			 u8 *extra, size_t extra_len, const u8 *da,
-			 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx)
+			 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
+			 u32 tx_flags)
 {
 	struct ieee80211_local *local = sdata->local;
 	struct sk_buff *skb;
@@ -1063,7 +1064,8 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
 		WARN_ON(err);
 	}
 
-	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
+					tx_flags;
 	ieee80211_tx_skb(sdata, skb);
 }
 
@@ -1277,7 +1279,7 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
 			      const u8 *ssid, size_t ssid_len,
 			      const u8 *ie, size_t ie_len,
-			      u32 ratemask, bool directed, bool no_cck,
+			      u32 ratemask, bool directed, u32 tx_flags,
 			      struct ieee80211_channel *channel, bool scan)
 {
 	struct sk_buff *skb;
@@ -1286,9 +1288,7 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
 					ssid, ssid_len,
 					ie, ie_len, directed);
 	if (skb) {
-		if (no_cck)
-			IEEE80211_SKB_CB(skb)->flags |=
-				IEEE80211_TX_CTL_NO_CCK_RATE;
+		IEEE80211_SKB_CB(skb)->flags |= tx_flags;
 		if (scan)
 			ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band);
 		else
-- 
cgit v1.2.3


From 3f52b7e328c526fa7a592af9bf5772c591ed38a4 Mon Sep 17 00:00:00 2001
From: Marco Porsch <marco@cozybit.com>
Date: Wed, 30 Jan 2013 18:14:08 +0100
Subject: mac80211: mesh power save basics

Add routines to
- maintain a PS mode for each peer and a non-peer PS mode
- indicate own PS mode in transmitted frames
- track neighbor STAs power modes
- buffer frames when neighbors are in PS mode
- add TIM and Awake Window IE to beacons
- release frames in Mesh Peer Service Periods

Add local_pm to sta_info to represent the link-specific power
mode at this station towards the remote station. When a peer
link is established, use the default power mode stored in mesh
config. Update the PS status if the peering status of a neighbor
changes.
Maintain a mesh power mode for non-peer mesh STAs. Set the
non-peer power mode to active mode during peering. Authenticated
mesh peering is currently not working when either node is
configured to be in power save mode.

Indicate the current power mode in transmitted frames. Use QoS
Nulls to indicate mesh power mode transitions.
For performance reasons, calls to the function setting the frame
flags are placed in HWMP routing routines, as there the STA
pointer is already available.

Add peer_pm to sta_info to represent the peer's link-specific
power mode towards the local station. Add nonpeer_pm to
represent the peer's power mode towards all non-peer stations.
Track power modes based on received frames.

Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS
neighbor counter and group-addressed frame buffer).

Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame
buffering routines in the tx path. Update num_sta_ps to buffer
and release group-addressed frames after DTIM beacons.

Announce the awake window duration in beacons if in light or
deep sleep mode towards any peer or non-peer. Create a TIM IE
similarly to AP mode and add it to mesh beacons. Parse received
Awake Window IEs and check TIM IEs for buffered frames.

Release frames towards peers in mesh Peer Service Periods. Use
the corresponding trigger frames and monitor the MPSP status.
Append a QoS Null as trigger frame if neccessary to properly end
the MPSP. Currently, in HT channels MPSPs behave imperfectly and
show large delay spikes and frame losses.

Signed-off-by: Marco Porsch <marco@cozybit.com>
Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com>
Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 include/linux/ieee80211.h     |   8 +
 net/mac80211/Kconfig          |  11 +
 net/mac80211/Makefile         |   3 +-
 net/mac80211/cfg.c            |  27 +-
 net/mac80211/debug.h          |  10 +
 net/mac80211/debugfs_netdev.c |   5 +
 net/mac80211/debugfs_sta.c    |   5 +-
 net/mac80211/ieee80211_i.h    |   6 +
 net/mac80211/mesh.c           |  33 +++
 net/mac80211/mesh.h           |  17 ++
 net/mac80211/mesh_hwmp.c      |   7 +
 net/mac80211/mesh_pathtbl.c   |   1 +
 net/mac80211/mesh_plink.c     |  17 ++
 net/mac80211/mesh_ps.c        | 585 ++++++++++++++++++++++++++++++++++++++++++
 net/mac80211/rx.c             |   7 +
 net/mac80211/sta_info.c       |  20 +-
 net/mac80211/sta_info.h       |  11 +
 net/mac80211/status.c         |   7 +
 net/mac80211/tx.c             |  31 ++-
 net/mac80211/util.c           |   4 +
 net/mac80211/wme.c            |  13 +-
 21 files changed, 811 insertions(+), 17 deletions(-)
 create mode 100644 net/mac80211/mesh_ps.c

(limited to 'net/mac80211/util.c')

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 11c8bc87fdcb..7e8a498efe6d 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -151,6 +151,11 @@
 /* Mesh Control 802.11s */
 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 
+/* Mesh Power Save Level */
+#define IEEE80211_QOS_CTL_MESH_PS_LEVEL		0x0200
+/* Mesh Receiver Service Period Initiated */
+#define IEEE80211_QOS_CTL_RSPI			0x0400
+
 /* U-APSD queue for WMM IEs sent by AP */
 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD	(1<<7)
 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK	0x0f
@@ -675,11 +680,14 @@ struct ieee80211_meshconf_ie {
  * @IEEE80211_MESHCONF_CAPAB_FORWARDING: the STA forwards MSDUs
  * @IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING: TBTT adjustment procedure
  *	is ongoing
+ * @IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL: STA is in deep sleep mode or has
+ *	neighbors in deep sleep mode
  */
 enum mesh_config_capab_flags {
 	IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS		= 0x01,
 	IEEE80211_MESHCONF_CAPAB_FORWARDING		= 0x08,
 	IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING		= 0x20,
+	IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL	= 0x40,
 };
 
 /**
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index b4ecf267a34b..0ecf947ad378 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -258,6 +258,17 @@ config MAC80211_MESH_SYNC_DEBUG
 
 	  Do not select this option.
 
+config MAC80211_MESH_PS_DEBUG
+	bool "Verbose mesh powersave debugging"
+	depends on MAC80211_DEBUG_MENU
+	depends on MAC80211_MESH
+	---help---
+	  Selecting this option causes mac80211 to print out very verbose mesh
+	  powersave debugging messages (when mac80211 is taking part in a
+	  mesh network).
+
+	  Do not select this option.
+
 config MAC80211_TDLS_DEBUG
 	bool "Verbose TDLS debugging"
 	depends on MAC80211_DEBUG_MENU
diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile
index 4911202334d9..9d7d840aac6d 100644
--- a/net/mac80211/Makefile
+++ b/net/mac80211/Makefile
@@ -39,7 +39,8 @@ mac80211-$(CONFIG_MAC80211_MESH) += \
 	mesh_pathtbl.o \
 	mesh_plink.o \
 	mesh_hwmp.o \
-	mesh_sync.o
+	mesh_sync.o \
+	mesh_ps.o
 
 mac80211-$(CONFIG_PM) += pm.o
 
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 661b878bd19c..f4f7e7691077 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -492,7 +492,10 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 #ifdef CONFIG_MAC80211_MESH
 		sinfo->filled |= STATION_INFO_LLID |
 				 STATION_INFO_PLID |
-				 STATION_INFO_PLINK_STATE;
+				 STATION_INFO_PLINK_STATE |
+				 STATION_INFO_LOCAL_PM |
+				 STATION_INFO_PEER_PM |
+				 STATION_INFO_NONPEER_PM;
 
 		sinfo->llid = le16_to_cpu(sta->llid);
 		sinfo->plid = le16_to_cpu(sta->plid);
@@ -501,6 +504,9 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 			sinfo->filled |= STATION_INFO_T_OFFSET;
 			sinfo->t_offset = sta->t_offset;
 		}
+		sinfo->local_pm = sta->local_pm;
+		sinfo->peer_pm = sta->peer_pm;
+		sinfo->nonpeer_pm = sta->nonpeer_pm;
 #endif
 	}
 
@@ -1262,6 +1268,10 @@ static int sta_apply_parameters(struct ieee80211_local *local,
 					changed = mesh_plink_inc_estab_count(
 							sdata);
 				sta->plink_state = params->plink_state;
+
+				ieee80211_mps_sta_status_update(sta);
+				ieee80211_mps_set_sta_local_pm(sta,
+					sdata->u.mesh.mshcfg.power_mode);
 				break;
 			case NL80211_PLINK_LISTEN:
 			case NL80211_PLINK_BLOCKED:
@@ -1273,6 +1283,9 @@ static int sta_apply_parameters(struct ieee80211_local *local,
 					changed = mesh_plink_dec_estab_count(
 							sdata);
 				sta->plink_state = params->plink_state;
+
+				ieee80211_mps_sta_status_update(sta);
+				ieee80211_mps_local_status_update(sdata);
 				break;
 			default:
 				/*  nothing  */
@@ -1289,6 +1302,9 @@ static int sta_apply_parameters(struct ieee80211_local *local,
 				break;
 			}
 		}
+
+		if (params->local_pm)
+			ieee80211_mps_set_sta_local_pm(sta, params->local_pm);
 #endif
 	}
 
@@ -1777,6 +1793,15 @@ static int ieee80211_update_mesh_config(struct wiphy *wiphy,
 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
 		conf->dot11MeshHWMPconfirmationInterval =
 			nconf->dot11MeshHWMPconfirmationInterval;
+	if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
+		conf->power_mode = nconf->power_mode;
+		ieee80211_mps_local_status_update(sdata);
+	}
+	if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) {
+		conf->dot11MeshAwakeWindowDuration =
+			nconf->dot11MeshAwakeWindowDuration;
+		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
+	}
 	return 0;
 }
 
diff --git a/net/mac80211/debug.h b/net/mac80211/debug.h
index 8f383a576016..4ccc5ed6237d 100644
--- a/net/mac80211/debug.h
+++ b/net/mac80211/debug.h
@@ -44,6 +44,12 @@
 #define MAC80211_MESH_SYNC_DEBUG 0
 #endif
 
+#ifdef CONFIG_MAC80211_MESH_PS_DEBUG
+#define MAC80211_MESH_PS_DEBUG 1
+#else
+#define MAC80211_MESH_PS_DEBUG 0
+#endif
+
 #ifdef CONFIG_MAC80211_TDLS_DEBUG
 #define MAC80211_TDLS_DEBUG 1
 #else
@@ -151,6 +157,10 @@ do {									\
 	_sdata_dbg(MAC80211_MESH_SYNC_DEBUG,				\
 		   sdata, fmt, ##__VA_ARGS__)
 
+#define mps_dbg(sdata, fmt, ...)					\
+	_sdata_dbg(MAC80211_MESH_PS_DEBUG,				\
+		   sdata, fmt, ##__VA_ARGS__)
+
 #define tdls_dbg(sdata, fmt, ...)					\
 	_sdata_dbg(MAC80211_TDLS_DEBUG,					\
 		   sdata, fmt, ##__VA_ARGS__)
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index cbde5cc49a40..059bbb82e84f 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -515,6 +515,9 @@ IEEE80211_IF_FILE(dot11MeshHWMProotInterval,
 		  u.mesh.mshcfg.dot11MeshHWMProotInterval, DEC);
 IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval,
 		  u.mesh.mshcfg.dot11MeshHWMPconfirmationInterval, DEC);
+IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC);
+IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration,
+		  u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC);
 #endif
 
 #define DEBUGFS_ADD_MODE(name, mode) \
@@ -620,6 +623,8 @@ static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
 	MESHPARAMS_ADD(dot11MeshHWMPactivePathToRootTimeout);
 	MESHPARAMS_ADD(dot11MeshHWMProotInterval);
 	MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval);
+	MESHPARAMS_ADD(power_mode);
+	MESHPARAMS_ADD(dot11MeshAwakeWindowDuration);
 #undef MESHPARAMS_ADD
 }
 #endif
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 6fb1168b9f16..c7591f73dbc3 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -65,7 +65,7 @@ static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
 	test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
 
 	int res = scnprintf(buf, sizeof(buf),
-			    "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+			    "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
 			    TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
 			    TEST(PS_DRIVER), TEST(AUTHORIZED),
 			    TEST(SHORT_PREAMBLE),
@@ -74,7 +74,8 @@ static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
 			    TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
 			    TEST(TDLS_PEER_AUTH), TEST(4ADDR_EVENT),
 			    TEST(INSERTED), TEST(RATE_CONTROL),
-			    TEST(TOFFSET_KNOWN));
+			    TEST(TOFFSET_KNOWN), TEST(MPSP_OWNER),
+			    TEST(MPSP_RECIPIENT));
 #undef TEST
 	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 }
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 8faf360e0b4c..5fe9db707880 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -590,6 +590,11 @@ struct ieee80211_if_mesh {
 	s64 sync_offset_clockdrift_max;
 	spinlock_t sync_offset_lock;
 	bool adjusting_tbtt;
+	/* mesh power save */
+	enum nl80211_mesh_power_mode nonpeer_pm;
+	int ps_peers_light_sleep;
+	int ps_peers_deep_sleep;
+	struct ps_data ps;
 };
 
 #ifdef CONFIG_MAC80211_MESH
@@ -1185,6 +1190,7 @@ struct ieee802_11_elems {
 	struct ieee80211_meshconf_ie *mesh_config;
 	u8 *mesh_id;
 	u8 *peering;
+	__le16 *awake_window;
 	u8 *preq;
 	u8 *prep;
 	u8 *perr;
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index f920da1201ab..35ac38871420 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -261,6 +261,9 @@ mesh_add_meshconf_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
 	*pos = IEEE80211_MESHCONF_CAPAB_FORWARDING;
 	*pos |= ifmsh->accepting_plinks ?
 	    IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
+	/* Mesh PS mode. See IEEE802.11-2012 8.4.2.100.8 */
+	*pos |= ifmsh->ps_peers_deep_sleep ?
+	    IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL : 0x00;
 	*pos++ |= ifmsh->adjusting_tbtt ?
 	    IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING : 0x00;
 	*pos++ = 0x00;
@@ -286,6 +289,29 @@ mesh_add_meshid_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
 	return 0;
 }
 
+int mesh_add_awake_window_ie(struct sk_buff *skb,
+			     struct ieee80211_sub_if_data *sdata)
+{
+	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+	u8 *pos;
+
+	/* see IEEE802.11-2012 13.14.6 */
+	if (ifmsh->ps_peers_light_sleep == 0 &&
+	    ifmsh->ps_peers_deep_sleep == 0 &&
+	    ifmsh->nonpeer_pm == NL80211_MESH_POWER_ACTIVE)
+		return 0;
+
+	if (skb_tailroom(skb) < 4)
+		return -ENOMEM;
+
+	pos = skb_put(skb, 2 + 2);
+	*pos++ = WLAN_EID_MESH_AWAKE_WINDOW;
+	*pos++ = 2;
+	put_unaligned_le16(ifmsh->mshcfg.dot11MeshAwakeWindowDuration, pos);
+
+	return 0;
+}
+
 int
 mesh_add_vendor_ies(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
 {
@@ -629,6 +655,8 @@ void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
 	sdata->vif.bss_conf.basic_rates =
 		ieee80211_mandatory_rates(local, band);
 
+	ieee80211_mps_local_status_update(sdata);
+
 	ieee80211_bss_info_change_notify(sdata, changed);
 
 	netif_carrier_on(sdata->dev);
@@ -651,6 +679,10 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
 	sta_info_flush(sdata);
 	mesh_path_flush_by_iface(sdata);
 
+	/* free all potentially still buffered group-addressed frames */
+	local->total_ps_buffered -= skb_queue_len(&ifmsh->ps.bc_buf);
+	skb_queue_purge(&ifmsh->ps.bc_buf);
+
 	del_timer_sync(&sdata->u.mesh.housekeeping_timer);
 	del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
 	del_timer_sync(&sdata->u.mesh.mesh_path_timer);
@@ -828,6 +860,7 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
 		    ieee80211_mesh_path_root_timer,
 		    (unsigned long) sdata);
 	INIT_LIST_HEAD(&ifmsh->preq_queue.list);
+	skb_queue_head_init(&ifmsh->ps.bc_buf);
 	spin_lock_init(&ifmsh->mesh_preq_queue_lock);
 	spin_lock_init(&ifmsh->sync_offset_lock);
 
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index aff301544c7f..eb336253b6b3 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -222,6 +222,8 @@ int mesh_add_meshid_ie(struct sk_buff *skb,
 		       struct ieee80211_sub_if_data *sdata);
 int mesh_add_rsn_ie(struct sk_buff *skb,
 		    struct ieee80211_sub_if_data *sdata);
+int mesh_add_awake_window_ie(struct sk_buff *skb,
+			     struct ieee80211_sub_if_data *sdata);
 int mesh_add_vendor_ies(struct sk_buff *skb,
 			struct ieee80211_sub_if_data *sdata);
 int mesh_add_ds_params_ie(struct sk_buff *skb,
@@ -242,6 +244,21 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata);
 void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh);
 const struct ieee80211_mesh_sync_ops *ieee80211_mesh_sync_ops_get(u8 method);
 
+/* mesh power save */
+void ieee80211_mps_local_status_update(struct ieee80211_sub_if_data *sdata);
+void ieee80211_mps_set_sta_local_pm(struct sta_info *sta,
+				    enum nl80211_mesh_power_mode pm);
+void ieee80211_mps_set_frame_flags(struct ieee80211_sub_if_data *sdata,
+				   struct sta_info *sta,
+				   struct ieee80211_hdr *hdr);
+void ieee80211_mps_sta_status_update(struct sta_info *sta);
+void ieee80211_mps_rx_h_sta_process(struct sta_info *sta,
+				    struct ieee80211_hdr *hdr);
+void ieee80211_mpsp_trigger_process(u8 *qc, struct sta_info *sta,
+				    bool tx, bool acked);
+void ieee80211_mps_frame_release(struct sta_info *sta,
+				 struct ieee802_11_elems *elems);
+
 /* Mesh paths */
 int mesh_nexthop_lookup(struct sk_buff *skb,
 		struct ieee80211_sub_if_data *sdata);
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 6b4603a90031..f0dd8742ed42 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -205,6 +205,7 @@ static void prepare_frame_for_deferred_tx(struct ieee80211_sub_if_data *sdata,
 		struct sk_buff *skb)
 {
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 
 	skb_set_mac_header(skb, 0);
 	skb_set_network_header(skb, 0);
@@ -217,6 +218,7 @@ static void prepare_frame_for_deferred_tx(struct ieee80211_sub_if_data *sdata,
 	info->control.vif = &sdata->vif;
 	info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
 	ieee80211_set_qos_hdr(sdata, skb);
+	ieee80211_mps_set_frame_flags(sdata, NULL, hdr);
 }
 
 /**
@@ -1080,6 +1082,10 @@ int mesh_nexthop_resolve(struct sk_buff *skb,
 	u8 *target_addr = hdr->addr3;
 	int err = 0;
 
+	/* Nulls are only sent to peers for PS and should be pre-addressed */
+	if (ieee80211_is_qos_nullfunc(hdr->frame_control))
+		return 0;
+
 	rcu_read_lock();
 	err = mesh_nexthop_lookup(skb, sdata);
 	if (!err)
@@ -1151,6 +1157,7 @@ int mesh_nexthop_lookup(struct sk_buff *skb,
 	if (next_hop) {
 		memcpy(hdr->addr1, next_hop->sta.addr, ETH_ALEN);
 		memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
+		ieee80211_mps_set_frame_flags(sdata, next_hop, hdr);
 		err = 0;
 	}
 
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index aa749818860e..d5786c3eaee2 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -212,6 +212,7 @@ void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta)
 		hdr = (struct ieee80211_hdr *) skb->data;
 		memcpy(hdr->addr1, sta->sta.addr, ETH_ALEN);
 		memcpy(hdr->addr2, mpath->sdata->vif.addr, ETH_ALEN);
+		ieee80211_mps_set_frame_flags(sta->sdata, sta, hdr);
 	}
 
 	spin_unlock_irqrestore(&mpath->frame_queue.lock, flags);
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index 6787d696d94c..fe7c3334d6fe 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -201,6 +201,9 @@ static u32 __mesh_plink_deactivate(struct sta_info *sta)
 	sta->plink_state = NL80211_PLINK_BLOCKED;
 	mesh_path_flush_by_nexthop(sta);
 
+	ieee80211_mps_sta_status_update(sta);
+	ieee80211_mps_local_status_update(sdata);
+
 	return changed;
 }
 
@@ -503,6 +506,7 @@ void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
 	    rssi_threshold_check(sta, sdata))
 		mesh_plink_open(sta);
 
+	ieee80211_mps_frame_release(sta, elems);
 out:
 	rcu_read_unlock();
 }
@@ -633,6 +637,9 @@ int mesh_plink_open(struct sta_info *sta)
 		"Mesh plink: starting establishment with %pM\n",
 		sta->sta.addr);
 
+	/* set the non-peer mode to active during peering */
+	ieee80211_mps_local_status_update(sdata);
+
 	return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
 				   sta->sta.addr, llid, 0, 0);
 }
@@ -866,6 +873,10 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
 			sta->llid = llid;
 			mesh_plink_timer_set(sta,
 					     mshcfg->dot11MeshRetryTimeout);
+
+			/* set the non-peer mode to active during peering */
+			ieee80211_mps_local_status_update(sdata);
+
 			spin_unlock_bh(&sta->lock);
 			mesh_plink_frame_tx(sdata,
 					    WLAN_SP_MESH_PEERING_OPEN,
@@ -959,6 +970,9 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
 			changed |= mesh_set_short_slot_time(sdata);
 			mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n",
 				sta->sta.addr);
+			ieee80211_mps_sta_status_update(sta);
+			ieee80211_mps_set_sta_local_pm(sta,
+						       mshcfg->power_mode);
 			break;
 		default:
 			spin_unlock_bh(&sta->lock);
@@ -998,6 +1012,9 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
 			mesh_plink_frame_tx(sdata,
 					    WLAN_SP_MESH_PEERING_CONFIRM,
 					    sta->sta.addr, llid, plid, 0);
+			ieee80211_mps_sta_status_update(sta);
+			ieee80211_mps_set_sta_local_pm(sta,
+						       mshcfg->power_mode);
 			break;
 		default:
 			spin_unlock_bh(&sta->lock);
diff --git a/net/mac80211/mesh_ps.c b/net/mac80211/mesh_ps.c
new file mode 100644
index 000000000000..b677962525ed
--- /dev/null
+++ b/net/mac80211/mesh_ps.c
@@ -0,0 +1,585 @@
+/*
+ * Copyright 2012-2013, Marco Porsch <marco.porsch@s2005.tu-chemnitz.de>
+ * Copyright 2012-2013, cozybit Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "mesh.h"
+#include "wme.h"
+
+
+/* mesh PS management */
+
+/**
+ * mps_qos_null_get - create pre-addressed QoS Null frame for mesh powersave
+ */
+static struct sk_buff *mps_qos_null_get(struct sta_info *sta)
+{
+	struct ieee80211_sub_if_data *sdata = sta->sdata;
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_hdr *nullfunc; /* use 4addr header */
+	struct sk_buff *skb;
+	int size = sizeof(*nullfunc);
+	__le16 fc;
+
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom + size + 2);
+	if (!skb)
+		return NULL;
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+
+	nullfunc = (struct ieee80211_hdr *) skb_put(skb, size);
+	fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
+	ieee80211_fill_mesh_addresses(nullfunc, &fc, sta->sta.addr,
+				      sdata->vif.addr);
+	nullfunc->frame_control = fc;
+	nullfunc->duration_id = 0;
+	/* no address resolution for this frame -> set addr 1 immediately */
+	memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
+	memset(skb_put(skb, 2), 0, 2); /* append QoS control field */
+	ieee80211_mps_set_frame_flags(sdata, sta, nullfunc);
+
+	return skb;
+}
+
+/**
+ * mps_qos_null_tx - send a QoS Null to indicate link-specific power mode
+ */
+static void mps_qos_null_tx(struct sta_info *sta)
+{
+	struct sk_buff *skb;
+
+	skb = mps_qos_null_get(sta);
+	if (!skb)
+		return;
+
+	mps_dbg(sta->sdata, "announcing peer-specific power mode to %pM\n",
+		sta->sta.addr);
+
+	/* don't unintentionally start a MPSP */
+	if (!test_sta_flag(sta, WLAN_STA_PS_STA)) {
+		u8 *qc = ieee80211_get_qos_ctl((void *) skb->data);
+
+		qc[0] |= IEEE80211_QOS_CTL_EOSP;
+	}
+
+	ieee80211_tx_skb(sta->sdata, skb);
+}
+
+/**
+ * ieee80211_mps_local_status_update - track status of local link-specific PMs
+ *
+ * @sdata: local mesh subif
+ *
+ * sets the non-peer power mode and triggers the driver PS (re-)configuration
+ */
+void ieee80211_mps_local_status_update(struct ieee80211_sub_if_data *sdata)
+{
+	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+	struct sta_info *sta;
+	bool peering = false;
+	int light_sleep_cnt = 0;
+	int deep_sleep_cnt = 0;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
+		if (sdata != sta->sdata)
+			continue;
+
+		switch (sta->plink_state) {
+		case NL80211_PLINK_OPN_SNT:
+		case NL80211_PLINK_OPN_RCVD:
+		case NL80211_PLINK_CNF_RCVD:
+			peering = true;
+			break;
+		case NL80211_PLINK_ESTAB:
+			if (sta->local_pm == NL80211_MESH_POWER_LIGHT_SLEEP)
+				light_sleep_cnt++;
+			else if (sta->local_pm == NL80211_MESH_POWER_DEEP_SLEEP)
+				deep_sleep_cnt++;
+			break;
+		default:
+			break;
+		}
+	}
+	rcu_read_unlock();
+
+	/*
+	 * Set non-peer mode to active during peering/scanning/authentication
+	 * (see IEEE802.11-2012 13.14.8.3). The non-peer mesh power mode is
+	 * deep sleep if the local STA is in light or deep sleep towards at
+	 * least one mesh peer (see 13.14.3.1). Otherwise, set it to the
+	 * user-configured default value.
+	 */
+	if (peering) {
+		mps_dbg(sdata, "setting non-peer PM to active for peering\n");
+		ifmsh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE;
+	} else if (light_sleep_cnt || deep_sleep_cnt) {
+		mps_dbg(sdata, "setting non-peer PM to deep sleep\n");
+		ifmsh->nonpeer_pm = NL80211_MESH_POWER_DEEP_SLEEP;
+	} else {
+		mps_dbg(sdata, "setting non-peer PM to user value\n");
+		ifmsh->nonpeer_pm = ifmsh->mshcfg.power_mode;
+	}
+
+	ifmsh->ps_peers_light_sleep = light_sleep_cnt;
+	ifmsh->ps_peers_deep_sleep = deep_sleep_cnt;
+}
+
+/**
+ * ieee80211_mps_set_sta_local_pm - set local PM towards a mesh STA
+ *
+ * @sta: mesh STA
+ * @pm: the power mode to set
+ */
+void ieee80211_mps_set_sta_local_pm(struct sta_info *sta,
+				    enum nl80211_mesh_power_mode pm)
+{
+	struct ieee80211_sub_if_data *sdata = sta->sdata;
+
+	mps_dbg(sdata, "local STA operates in mode %d with %pM\n",
+		pm, sta->sta.addr);
+
+	sta->local_pm = pm;
+
+	/*
+	 * announce peer-specific power mode transition
+	 * (see IEEE802.11-2012 13.14.3.2 and 13.14.3.3)
+	 */
+	if (sta->plink_state == NL80211_PLINK_ESTAB)
+		mps_qos_null_tx(sta);
+
+	ieee80211_mps_local_status_update(sdata);
+}
+
+/**
+ * ieee80211_mps_set_frame_flags - set mesh PS flags in FC (and QoS Control)
+ *
+ * @sdata: local mesh subif
+ * @sta: mesh STA
+ * @hdr: 802.11 frame header
+ *
+ * see IEEE802.11-2012 8.2.4.1.7 and 8.2.4.5.11
+ *
+ * NOTE: sta must be given when an individually-addressed QoS frame header
+ * is handled, for group-addressed and management frames it is not used
+ */
+void ieee80211_mps_set_frame_flags(struct ieee80211_sub_if_data *sdata,
+				   struct sta_info *sta,
+				   struct ieee80211_hdr *hdr)
+{
+	enum nl80211_mesh_power_mode pm;
+	u8 *qc;
+
+	if (WARN_ON(is_unicast_ether_addr(hdr->addr1) &&
+		    ieee80211_is_data_qos(hdr->frame_control) &&
+		    !sta))
+		return;
+
+	if (is_unicast_ether_addr(hdr->addr1) &&
+	    ieee80211_is_data_qos(hdr->frame_control) &&
+	    sta->plink_state == NL80211_PLINK_ESTAB)
+		pm = sta->local_pm;
+	else
+		pm = sdata->u.mesh.nonpeer_pm;
+
+	if (pm == NL80211_MESH_POWER_ACTIVE)
+		hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_PM);
+	else
+		hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
+
+	if (!ieee80211_is_data_qos(hdr->frame_control))
+		return;
+
+	qc = ieee80211_get_qos_ctl(hdr);
+
+	if ((is_unicast_ether_addr(hdr->addr1) &&
+	     pm == NL80211_MESH_POWER_DEEP_SLEEP) ||
+	    (is_multicast_ether_addr(hdr->addr1) &&
+	     sdata->u.mesh.ps_peers_deep_sleep > 0))
+		qc[1] |= (IEEE80211_QOS_CTL_MESH_PS_LEVEL >> 8);
+	else
+		qc[1] &= ~(IEEE80211_QOS_CTL_MESH_PS_LEVEL >> 8);
+}
+
+/**
+ * ieee80211_mps_sta_status_update - update buffering status of neighbor STA
+ *
+ * @sta: mesh STA
+ *
+ * called after change of peering status or non-peer/peer-specific power mode
+ */
+void ieee80211_mps_sta_status_update(struct sta_info *sta)
+{
+	enum nl80211_mesh_power_mode pm;
+	bool do_buffer;
+
+	/*
+	 * use peer-specific power mode if peering is established and the
+	 * peer's power mode is known
+	 */
+	if (sta->plink_state == NL80211_PLINK_ESTAB &&
+	    sta->peer_pm != NL80211_MESH_POWER_UNKNOWN)
+		pm = sta->peer_pm;
+	else
+		pm = sta->nonpeer_pm;
+
+	do_buffer = (pm != NL80211_MESH_POWER_ACTIVE);
+
+	/* Don't let the same PS state be set twice */
+	if (test_sta_flag(sta, WLAN_STA_PS_STA) == do_buffer)
+		return;
+
+	if (do_buffer) {
+		set_sta_flag(sta, WLAN_STA_PS_STA);
+		atomic_inc(&sta->sdata->u.mesh.ps.num_sta_ps);
+		mps_dbg(sta->sdata, "start PS buffering frames towards %pM\n",
+			sta->sta.addr);
+	} else {
+		ieee80211_sta_ps_deliver_wakeup(sta);
+	}
+
+	/* clear the MPSP flags for non-peers or active STA */
+	if (sta->plink_state != NL80211_PLINK_ESTAB) {
+		clear_sta_flag(sta, WLAN_STA_MPSP_OWNER);
+		clear_sta_flag(sta, WLAN_STA_MPSP_RECIPIENT);
+	} else if (!do_buffer) {
+		clear_sta_flag(sta, WLAN_STA_MPSP_OWNER);
+	}
+}
+
+static void mps_set_sta_peer_pm(struct sta_info *sta,
+				struct ieee80211_hdr *hdr)
+{
+	enum nl80211_mesh_power_mode pm;
+	u8 *qc = ieee80211_get_qos_ctl(hdr);
+
+	/*
+	 * Test Power Management field of frame control (PW) and
+	 * mesh power save level subfield of QoS control field (PSL)
+	 *
+	 * | PM | PSL| Mesh PM |
+	 * +----+----+---------+
+	 * | 0  |Rsrv|  Active |
+	 * | 1  | 0  |  Light  |
+	 * | 1  | 1  |  Deep   |
+	 */
+	if (ieee80211_has_pm(hdr->frame_control)) {
+		if (qc[1] & (IEEE80211_QOS_CTL_MESH_PS_LEVEL >> 8))
+			pm = NL80211_MESH_POWER_DEEP_SLEEP;
+		else
+			pm = NL80211_MESH_POWER_LIGHT_SLEEP;
+	} else {
+		pm = NL80211_MESH_POWER_ACTIVE;
+	}
+
+	if (sta->peer_pm == pm)
+		return;
+
+	mps_dbg(sta->sdata, "STA %pM enters mode %d\n",
+		sta->sta.addr, pm);
+
+	sta->peer_pm = pm;
+
+	ieee80211_mps_sta_status_update(sta);
+}
+
+static void mps_set_sta_nonpeer_pm(struct sta_info *sta,
+				   struct ieee80211_hdr *hdr)
+{
+	enum nl80211_mesh_power_mode pm;
+
+	if (ieee80211_has_pm(hdr->frame_control))
+		pm = NL80211_MESH_POWER_DEEP_SLEEP;
+	else
+		pm = NL80211_MESH_POWER_ACTIVE;
+
+	if (sta->nonpeer_pm == pm)
+		return;
+
+	mps_dbg(sta->sdata, "STA %pM sets non-peer mode to %d\n",
+		sta->sta.addr, pm);
+
+	sta->nonpeer_pm = pm;
+
+	ieee80211_mps_sta_status_update(sta);
+}
+
+/**
+ * ieee80211_mps_rx_h_sta_process - frame receive handler for mesh powersave
+ *
+ * @sta: STA info that transmitted the frame
+ * @hdr: IEEE 802.11 (QoS) Header
+ */
+void ieee80211_mps_rx_h_sta_process(struct sta_info *sta,
+				    struct ieee80211_hdr *hdr)
+{
+	if (is_unicast_ether_addr(hdr->addr1) &&
+	    ieee80211_is_data_qos(hdr->frame_control)) {
+		/*
+		 * individually addressed QoS Data/Null frames contain
+		 * peer link-specific PS mode towards the local STA
+		 */
+		mps_set_sta_peer_pm(sta, hdr);
+
+		/* check for mesh Peer Service Period trigger frames */
+		ieee80211_mpsp_trigger_process(ieee80211_get_qos_ctl(hdr),
+					       sta, false, false);
+	} else {
+		/*
+		 * can only determine non-peer PS mode
+		 * (see IEEE802.11-2012 8.2.4.1.7)
+		 */
+		mps_set_sta_nonpeer_pm(sta, hdr);
+	}
+}
+
+
+/* mesh PS frame release */
+
+static void mpsp_trigger_send(struct sta_info *sta, bool rspi, bool eosp)
+{
+	struct ieee80211_sub_if_data *sdata = sta->sdata;
+	struct sk_buff *skb;
+	struct ieee80211_hdr *nullfunc;
+	struct ieee80211_tx_info *info;
+	u8 *qc;
+
+	skb = mps_qos_null_get(sta);
+	if (!skb)
+		return;
+
+	nullfunc = (struct ieee80211_hdr *) skb->data;
+	if (!eosp)
+		nullfunc->frame_control |=
+				cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+	/*
+	 * | RSPI | EOSP |  MPSP triggering   |
+	 * +------+------+--------------------+
+	 * |  0   |  0   | local STA is owner |
+	 * |  0   |  1   | no MPSP (MPSP end) |
+	 * |  1   |  0   | both STA are owner |
+	 * |  1   |  1   | peer STA is owner  | see IEEE802.11-2012 13.14.9.2
+	 */
+	qc = ieee80211_get_qos_ctl(nullfunc);
+	if (rspi)
+		qc[1] |= (IEEE80211_QOS_CTL_RSPI >> 8);
+	if (eosp)
+		qc[0] |= IEEE80211_QOS_CTL_EOSP;
+
+	info = IEEE80211_SKB_CB(skb);
+
+	info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER |
+		       IEEE80211_TX_CTL_REQ_TX_STATUS;
+
+	mps_dbg(sdata, "sending MPSP trigger%s%s to %pM\n",
+		rspi ? " RSPI" : "", eosp ? " EOSP" : "", sta->sta.addr);
+
+	ieee80211_tx_skb(sdata, skb);
+}
+
+/**
+ * mpsp_qos_null_append - append QoS Null frame to MPSP skb queue if needed
+ *
+ * To properly end a mesh MPSP the last transmitted frame has to set the EOSP
+ * flag in the QoS Control field. In case the current tailing frame is not a
+ * QoS Data frame, append a QoS Null to carry the flag.
+ */
+static void mpsp_qos_null_append(struct sta_info *sta,
+				 struct sk_buff_head *frames)
+{
+	struct ieee80211_sub_if_data *sdata = sta->sdata;
+	struct sk_buff *new_skb, *skb = skb_peek_tail(frames);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	struct ieee80211_tx_info *info;
+
+	if (ieee80211_is_data_qos(hdr->frame_control))
+		return;
+
+	new_skb = mps_qos_null_get(sta);
+	if (!new_skb)
+		return;
+
+	mps_dbg(sdata, "appending QoS Null in MPSP towards %pM\n",
+		sta->sta.addr);
+	/*
+	 * This frame has to be transmitted last. Assign lowest priority to
+	 * make sure it cannot pass other frames when releasing multiple ACs.
+	 */
+	new_skb->priority = 1;
+	skb_set_queue_mapping(new_skb, IEEE80211_AC_BK);
+	ieee80211_set_qos_hdr(sdata, new_skb);
+
+	info = IEEE80211_SKB_CB(new_skb);
+	info->control.vif = &sdata->vif;
+	info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
+
+	__skb_queue_tail(frames, new_skb);
+}
+
+/**
+ * mps_frame_deliver - transmit frames during mesh powersave
+ *
+ * @sta: STA info to transmit to
+ * @n_frames: number of frames to transmit. -1 for all
+ */
+static void mps_frame_deliver(struct sta_info *sta, int n_frames)
+{
+	struct ieee80211_sub_if_data *sdata = sta->sdata;
+	struct ieee80211_local *local = sdata->local;
+	int ac;
+	struct sk_buff_head frames;
+	struct sk_buff *skb;
+	bool more_data = false;
+
+	skb_queue_head_init(&frames);
+
+	/* collect frame(s) from buffers */
+	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
+		while (n_frames != 0) {
+			skb = skb_dequeue(&sta->tx_filtered[ac]);
+			if (!skb) {
+				skb = skb_dequeue(
+					&sta->ps_tx_buf[ac]);
+				if (skb)
+					local->total_ps_buffered--;
+			}
+			if (!skb)
+				break;
+			n_frames--;
+			__skb_queue_tail(&frames, skb);
+		}
+
+		if (!skb_queue_empty(&sta->tx_filtered[ac]) ||
+		    !skb_queue_empty(&sta->ps_tx_buf[ac]))
+			more_data = true;
+	}
+
+	/* nothing to send? -> EOSP */
+	if (skb_queue_empty(&frames)) {
+		mpsp_trigger_send(sta, false, true);
+		return;
+	}
+
+	/* in a MPSP make sure the last skb is a QoS Data frame */
+	if (test_sta_flag(sta, WLAN_STA_MPSP_OWNER))
+		mpsp_qos_null_append(sta, &frames);
+
+	mps_dbg(sta->sdata, "sending %d frames to PS STA %pM\n",
+		skb_queue_len(&frames), sta->sta.addr);
+
+	/* prepare collected frames for transmission */
+	skb_queue_walk(&frames, skb) {
+		struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+		struct ieee80211_hdr *hdr = (void *) skb->data;
+
+		/*
+		 * Tell TX path to send this frame even though the
+		 * STA may still remain is PS mode after this frame
+		 * exchange.
+		 */
+		info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER;
+
+		if (more_data || !skb_queue_is_last(&frames, skb))
+			hdr->frame_control |=
+				cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+		else
+			hdr->frame_control &=
+				cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
+
+		if (skb_queue_is_last(&frames, skb) &&
+		    ieee80211_is_data_qos(hdr->frame_control)) {
+			u8 *qoshdr = ieee80211_get_qos_ctl(hdr);
+
+			/* MPSP trigger frame ends service period */
+			*qoshdr |= IEEE80211_QOS_CTL_EOSP;
+			info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
+		}
+	}
+
+	ieee80211_add_pending_skbs(local, &frames);
+	sta_info_recalc_tim(sta);
+}
+
+/**
+ * ieee80211_mpsp_trigger_process - track status of mesh Peer Service Periods
+ *
+ * @qc: QoS Control field
+ * @sta: peer to start a MPSP with
+ * @tx: frame was transmitted by the local STA
+ * @acked: frame has been transmitted successfully
+ *
+ * NOTE: active mode STA may only serve as MPSP owner
+ */
+void ieee80211_mpsp_trigger_process(u8 *qc, struct sta_info *sta,
+				    bool tx, bool acked)
+{
+	u8 rspi = qc[1] & (IEEE80211_QOS_CTL_RSPI >> 8);
+	u8 eosp = qc[0] & IEEE80211_QOS_CTL_EOSP;
+
+	if (tx) {
+		if (rspi && acked)
+			set_sta_flag(sta, WLAN_STA_MPSP_RECIPIENT);
+
+		if (eosp)
+			clear_sta_flag(sta, WLAN_STA_MPSP_OWNER);
+		else if (acked &&
+			 test_sta_flag(sta, WLAN_STA_PS_STA) &&
+			 !test_and_set_sta_flag(sta, WLAN_STA_MPSP_OWNER))
+			mps_frame_deliver(sta, -1);
+	} else {
+		if (eosp)
+			clear_sta_flag(sta, WLAN_STA_MPSP_RECIPIENT);
+		else if (sta->local_pm != NL80211_MESH_POWER_ACTIVE)
+			set_sta_flag(sta, WLAN_STA_MPSP_RECIPIENT);
+
+		if (rspi && !test_and_set_sta_flag(sta, WLAN_STA_MPSP_OWNER))
+			mps_frame_deliver(sta, -1);
+	}
+}
+
+/**
+ * ieee80211_mps_frame_release - release buffered frames in response to beacon
+ *
+ * @sta: mesh STA
+ * @elems: beacon IEs
+ *
+ * For peers if we have individually-addressed frames buffered or the peer
+ * indicates buffered frames, send a corresponding MPSP trigger frame. Since
+ * we do not evaluate the awake window duration, QoS Nulls are used as MPSP
+ * trigger frames. If the neighbour STA is not a peer, only send single frames.
+ */
+void ieee80211_mps_frame_release(struct sta_info *sta,
+				 struct ieee802_11_elems *elems)
+{
+	int ac, buffer_local = 0;
+	bool has_buffered = false;
+
+	/* TIM map only for LLID <= IEEE80211_MAX_AID */
+	if (sta->plink_state == NL80211_PLINK_ESTAB)
+		has_buffered = ieee80211_check_tim(elems->tim, elems->tim_len,
+				le16_to_cpu(sta->llid) % IEEE80211_MAX_AID);
+
+	if (has_buffered)
+		mps_dbg(sta->sdata, "%pM indicates buffered frames\n",
+			sta->sta.addr);
+
+	/* only transmit to PS STA with announced, non-zero awake window */
+	if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
+	    (!elems->awake_window || !le16_to_cpu(*elems->awake_window)))
+		return;
+
+	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
+		buffer_local += skb_queue_len(&sta->ps_tx_buf[ac]) +
+				skb_queue_len(&sta->tx_filtered[ac]);
+
+	if (!has_buffered && !buffer_local)
+		return;
+
+	if (sta->plink_state == NL80211_PLINK_ESTAB)
+		mpsp_trigger_send(sta, has_buffered, !buffer_local);
+	else
+		mps_frame_deliver(sta, 1);
+}
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index a19089565c4b..c98be0593756 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1452,6 +1452,10 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
 		}
 	}
 
+	/* mesh power save support */
+	if (ieee80211_vif_is_mesh(&rx->sdata->vif))
+		ieee80211_mps_rx_h_sta_process(sta, hdr);
+
 	/*
 	 * Drop (qos-)data::nullfunc frames silently, since they
 	 * are used only to control station power saving mode.
@@ -2090,7 +2094,10 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 	if (is_multicast_ether_addr(fwd_hdr->addr1)) {
 		IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_mcast);
 		memcpy(fwd_hdr->addr2, sdata->vif.addr, ETH_ALEN);
+		/* update power mode indication when forwarding */
+		ieee80211_mps_set_frame_flags(sdata, NULL, fwd_hdr);
 	} else if (!mesh_nexthop_lookup(fwd_skb, sdata)) {
+		/* mesh power mode flags updated in mesh_nexthop_lookup */
 		IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_unicast);
 	} else {
 		/* unable to resolve next hop */
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 227233c3ff7f..47a0f0601768 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -120,6 +120,8 @@ static void cleanup_single_sta(struct sta_info *sta)
 		if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
 		    sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
 			ps = &sdata->bss->ps;
+		else if (ieee80211_vif_is_mesh(&sdata->vif))
+			ps = &sdata->u.mesh.ps;
 		else
 			return;
 
@@ -587,6 +589,12 @@ void sta_info_recalc_tim(struct sta_info *sta)
 
 		ps = &sta->sdata->bss->ps;
 		id = sta->sta.aid;
+#ifdef CONFIG_MAC80211_MESH
+	} else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) {
+		ps = &sta->sdata->u.mesh.ps;
+		/* TIM map only for PLID <= IEEE80211_MAX_AID */
+		id = le16_to_cpu(sta->plid) % IEEE80211_MAX_AID;
+#endif
 	} else {
 		return;
 	}
@@ -745,8 +753,9 @@ static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
 	bool have_buffered = false;
 	int ac;
 
-	/* This is only necessary for stations on BSS interfaces */
-	if (!sta->sdata->bss)
+	/* This is only necessary for stations on BSS/MBSS interfaces */
+	if (!sta->sdata->bss &&
+	    !ieee80211_vif_is_mesh(&sta->sdata->vif))
 		return false;
 
 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
@@ -934,6 +943,11 @@ void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
 		if (time_after(jiffies, sta->last_rx + exp_time)) {
 			sta_dbg(sta->sdata, "expiring inactive STA %pM\n",
 				sta->sta.addr);
+
+			if (ieee80211_vif_is_mesh(&sdata->vif) &&
+			    test_sta_flag(sta, WLAN_STA_PS_STA))
+				atomic_dec(&sdata->u.mesh.ps.num_sta_ps);
+
 			WARN_ON(__sta_info_destroy(sta));
 		}
 	}
@@ -992,6 +1006,8 @@ static void clear_sta_ps_flags(void *_sta)
 	if (sdata->vif.type == NL80211_IFTYPE_AP ||
 	    sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
 		ps = &sdata->bss->ps;
+	else if (ieee80211_vif_is_mesh(&sdata->vif))
+		ps = &sdata->u.mesh.ps;
 	else
 		return;
 
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index af7d78aa5523..5a1deba2c645 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -56,6 +56,8 @@
  * @WLAN_STA_INSERTED: This station is inserted into the hash table.
  * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station.
  * @WLAN_STA_TOFFSET_KNOWN: toffset calculated for this station is valid.
+ * @WLAN_STA_MPSP_OWNER: local STA is owner of a mesh Peer Service Period.
+ * @WLAN_STA_MPSP_RECIPIENT: local STA is recipient of a MPSP.
  */
 enum ieee80211_sta_info_flags {
 	WLAN_STA_AUTH,
@@ -78,6 +80,8 @@ enum ieee80211_sta_info_flags {
 	WLAN_STA_INSERTED,
 	WLAN_STA_RATE_CONTROL,
 	WLAN_STA_TOFFSET_KNOWN,
+	WLAN_STA_MPSP_OWNER,
+	WLAN_STA_MPSP_RECIPIENT,
 };
 
 #define ADDBA_RESP_INTERVAL HZ
@@ -282,6 +286,9 @@ struct sta_ampdu_mlme {
  * @t_offset_setpoint: reference timing offset of this sta to be used when
  * 	calculating clockdrift
  * @ch_width: peer's channel width
+ * @local_pm: local link-specific power save mode
+ * @peer_pm: peer-specific power save mode towards local STA
+ * @nonpeer_pm: STA power save mode towards non-peer neighbors
  * @debugfs: debug filesystem info
  * @dead: set to true when sta is unlinked
  * @uploaded: set to true when sta is uploaded to the driver
@@ -379,6 +386,10 @@ struct sta_info {
 	s64 t_offset;
 	s64 t_offset_setpoint;
 	enum nl80211_chan_width ch_width;
+	/* mesh power save */
+	enum nl80211_mesh_power_mode local_pm;
+	enum nl80211_mesh_power_mode peer_pm;
+	enum nl80211_mesh_power_mode nonpeer_pm;
 #endif
 
 #ifdef CONFIG_MAC80211_DEBUGFS
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index d041de056b7f..43439203f4e4 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -472,6 +472,13 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 			return;
 		}
 
+		/* mesh Peer Service Period support */
+		if (ieee80211_vif_is_mesh(&sta->sdata->vif) &&
+		    ieee80211_is_data_qos(fc))
+			ieee80211_mpsp_trigger_process(
+					ieee80211_get_qos_ctl(hdr),
+					sta, true, acked);
+
 		if ((local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) &&
 		    (rates_idx != -1))
 			sta->last_tx_rate = info->status.rates[rates_idx];
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 7892b0a8873e..2ef0e19b06bb 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -329,6 +329,8 @@ static void purge_old_ps_buffers(struct ieee80211_local *local)
 
 		if (sdata->vif.type == NL80211_IFTYPE_AP)
 			ps = &sdata->u.ap.ps;
+		else if (ieee80211_vif_is_mesh(&sdata->vif))
+			ps = &sdata->u.mesh.ps;
 		else
 			continue;
 
@@ -372,18 +374,20 @@ ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx)
 	/*
 	 * broadcast/multicast frame
 	 *
-	 * If any of the associated stations is in power save mode,
+	 * If any of the associated/peer stations is in power save mode,
 	 * the frame is buffered to be sent after DTIM beacon frame.
 	 * This is done either by the hardware or us.
 	 */
 
-	/* powersaving STAs currently only in AP/VLAN mode */
+	/* powersaving STAs currently only in AP/VLAN/mesh mode */
 	if (tx->sdata->vif.type == NL80211_IFTYPE_AP ||
 	    tx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
 		if (!tx->sdata->bss)
 			return TX_CONTINUE;
 
 		ps = &tx->sdata->bss->ps;
+	} else if (ieee80211_vif_is_mesh(&tx->sdata->vif)) {
+		ps = &tx->sdata->u.mesh.ps;
 	} else {
 		return TX_CONTINUE;
 	}
@@ -1473,12 +1477,14 @@ void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
 	hdr = (struct ieee80211_hdr *) skb->data;
 	info->control.vif = &sdata->vif;
 
-	if (ieee80211_vif_is_mesh(&sdata->vif) &&
-	    ieee80211_is_data(hdr->frame_control) &&
-	    !is_multicast_ether_addr(hdr->addr1) &&
-	    mesh_nexthop_resolve(skb, sdata)) {
-		/* skb queued: don't free */
-		return;
+	if (ieee80211_vif_is_mesh(&sdata->vif)) {
+		if (ieee80211_is_data(hdr->frame_control) &&
+		    is_unicast_ether_addr(hdr->addr1)) {
+			if (mesh_nexthop_resolve(skb, sdata))
+				return; /* skb queued: don't free */
+		} else {
+			ieee80211_mps_set_frame_flags(sdata, NULL, hdr);
+		}
 	}
 
 	ieee80211_set_qos_hdr(sdata, skb);
@@ -2445,12 +2451,14 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 				    2 + /* NULL SSID */
 				    2 + 8 + /* supported rates */
 				    2 + 3 + /* DS params */
+				    256 + /* TIM IE */
 				    2 + (IEEE80211_MAX_SUPP_RATES - 8) +
 				    2 + sizeof(struct ieee80211_ht_cap) +
 				    2 + sizeof(struct ieee80211_ht_operation) +
 				    2 + sdata->u.mesh.mesh_id_len +
 				    2 + sizeof(struct ieee80211_meshconf_ie) +
-				    sdata->u.mesh.ie_len);
+				    sdata->u.mesh.ie_len +
+				    2 + sizeof(__le16)); /* awake window */
 		if (!skb)
 			goto out;
 
@@ -2462,6 +2470,7 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 		eth_broadcast_addr(mgmt->da);
 		memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
 		memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
+		ieee80211_mps_set_frame_flags(sdata, NULL, (void *) mgmt);
 		mgmt->u.beacon.beacon_int =
 			cpu_to_le16(sdata->vif.bss_conf.beacon_int);
 		mgmt->u.beacon.capab_info |= cpu_to_le16(
@@ -2475,12 +2484,14 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 
 		if (ieee80211_add_srates_ie(sdata, skb, true, band) ||
 		    mesh_add_ds_params_ie(skb, sdata) ||
+		    ieee80211_beacon_add_tim(sdata, &ifmsh->ps, skb) ||
 		    ieee80211_add_ext_srates_ie(sdata, skb, true, band) ||
 		    mesh_add_rsn_ie(skb, sdata) ||
 		    mesh_add_ht_cap_ie(skb, sdata) ||
 		    mesh_add_ht_oper_ie(skb, sdata) ||
 		    mesh_add_meshid_ie(skb, sdata) ||
 		    mesh_add_meshconf_ie(skb, sdata) ||
+		    mesh_add_awake_window_ie(skb, sdata) ||
 		    mesh_add_vendor_ies(skb, sdata)) {
 			pr_err("o11s: couldn't add ies!\n");
 			goto out;
@@ -2734,6 +2745,8 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw,
 			goto out;
 
 		ps = &sdata->u.ap.ps;
+	} else if (ieee80211_vif_is_mesh(&sdata->vif)) {
+		ps = &sdata->u.mesh.ps;
 	} else {
 		goto out;
 	}
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 139ad9b66c39..6cb71a350edd 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -805,6 +805,10 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
 			elems->peering = pos;
 			elems->peering_len = elen;
 			break;
+		case WLAN_EID_MESH_AWAKE_WINDOW:
+			if (elen >= 2)
+				elems->awake_window = (void *)pos;
+			break;
 		case WLAN_EID_PREQ:
 			elems->preq = pos;
 			elems->preq_len = elen;
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 906f00cd6d2f..afba19cb6f87 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -191,6 +191,15 @@ void ieee80211_set_qos_hdr(struct ieee80211_sub_if_data *sdata,
 
 	/* qos header is 2 bytes */
 	*p++ = ack_policy | tid;
-	*p = ieee80211_vif_is_mesh(&sdata->vif) ?
-		(IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT >> 8) : 0;
+	if (ieee80211_vif_is_mesh(&sdata->vif)) {
+		/* preserve RSPI and Mesh PS Level bit */
+		*p &= ((IEEE80211_QOS_CTL_RSPI |
+			IEEE80211_QOS_CTL_MESH_PS_LEVEL) >> 8);
+
+		/* Nulls don't have a mesh header (frame body) */
+		if (!ieee80211_is_qos_nullfunc(hdr->frame_control))
+			*p |= (IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT >> 8);
+	} else {
+		*p = 0;
+	}
 }
-- 
cgit v1.2.3


From 164eb02d070af987890e1db1c12b8ae0394b19f7 Mon Sep 17 00:00:00 2001
From: Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>
Date: Fri, 8 Feb 2013 18:16:20 +0100
Subject: mac80211: add radar detection command/event

Add command to trigger radar detection in the driver/FW.
Once radar detection is started it should continuously
monitor for radars as long as the channel active.
If radar is detected usermode notified with 'radar
detected' event.

Scanning and remain on channel functionality must be disabled
while doing radar detection/scanning, and vice versa.

Based on original patch by Victor Goldenshtein <victorg@ti.com>

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 include/net/mac80211.h     | 14 ++++++++++++++
 net/mac80211/cfg.c         | 36 +++++++++++++++++++++++++++++++++++-
 net/mac80211/chan.c        | 33 +++++++++++++++++++++++++++++++++
 net/mac80211/ieee80211_i.h | 14 ++++++++++++++
 net/mac80211/iface.c       | 12 ++++++++++++
 net/mac80211/main.c        | 13 +++++++++++++
 net/mac80211/mlme.c        | 13 +++++++++++++
 net/mac80211/pm.c          |  2 ++
 net/mac80211/scan.c        |  3 +++
 net/mac80211/trace.h       | 19 +++++++++++++++++++
 net/mac80211/util.c        | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 11 files changed, 204 insertions(+), 1 deletion(-)

(limited to 'net/mac80211/util.c')

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 0eaa9092364b..7241962f9f13 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -147,10 +147,12 @@ struct ieee80211_low_level_stats {
  * enum ieee80211_chanctx_change - change flag for channel context
  * @IEEE80211_CHANCTX_CHANGE_WIDTH: The channel width changed
  * @IEEE80211_CHANCTX_CHANGE_RX_CHAINS: The number of RX chains changed
+ * @IEEE80211_CHANCTX_CHANGE_RADAR: radar detection flag changed
  */
 enum ieee80211_chanctx_change {
 	IEEE80211_CHANCTX_CHANGE_WIDTH		= BIT(0),
 	IEEE80211_CHANCTX_CHANGE_RX_CHAINS	= BIT(1),
+	IEEE80211_CHANCTX_CHANGE_RADAR		= BIT(2),
 };
 
 /**
@@ -165,6 +167,7 @@ enum ieee80211_chanctx_change {
  * @rx_chains_dynamic: The number of RX chains that must be enabled
  *	after RTS/CTS handshake to receive SMPS MIMO transmissions;
  *	this will always be >= @rx_chains_static.
+ * @radar_enabled: whether radar detection is enabled on this channel.
  * @drv_priv: data area for driver use, will always be aligned to
  *	sizeof(void *), size is determined in hw information.
  */
@@ -173,6 +176,8 @@ struct ieee80211_chanctx_conf {
 
 	u8 rx_chains_static, rx_chains_dynamic;
 
+	bool radar_enabled;
+
 	u8 drv_priv[0] __aligned(sizeof(void *));
 };
 
@@ -967,6 +972,7 @@ enum ieee80211_smps_mode {
  *
  * @channel: the channel to tune to
  * @channel_type: the channel (HT) type
+ * @radar_enabled: whether radar detection is enabled
  *
  * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame
  *    (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11,
@@ -993,6 +999,7 @@ struct ieee80211_conf {
 
 	struct ieee80211_channel *channel;
 	enum nl80211_channel_type channel_type;
+	bool radar_enabled;
 	enum ieee80211_smps_mode smps_mode;
 };
 
@@ -3944,6 +3951,13 @@ void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
 			       enum nl80211_cqm_rssi_threshold_event rssi_event,
 			       gfp_t gfp);
 
+/**
+ * ieee80211_radar_detected - inform that a radar was detected
+ *
+ * @hw: pointer as obtained from ieee80211_alloc_hw()
+ */
+void ieee80211_radar_detected(struct ieee80211_hw *hw);
+
 /**
  * ieee80211_chswitch_done - Complete channel switch process
  * @vif: &struct ieee80211_vif pointer from the add_interface callback.
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index e3dec80cf617..0969978c2d92 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -928,6 +928,7 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 	/* TODO: make hostapd tell us what it wants */
 	sdata->smps_mode = IEEE80211_SMPS_OFF;
 	sdata->needed_rx_chains = sdata->local->rx_chains;
+	sdata->radar_required = params->radar_required;
 
 	err = ieee80211_vif_use_channel(sdata, &params->chandef,
 					IEEE80211_CHANCTX_SHARED);
@@ -2395,7 +2396,8 @@ static int ieee80211_start_roc_work(struct ieee80211_local *local,
 	INIT_LIST_HEAD(&roc->dependents);
 
 	/* if there's one pending or we're scanning, queue this one */
-	if (!list_empty(&local->roc_list) || local->scanning)
+	if (!list_empty(&local->roc_list) ||
+	    local->scanning || local->radar_detect_enabled)
 		goto out_check_combine;
 
 	/* if not HW assist, just queue & schedule work */
@@ -2645,6 +2647,37 @@ static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
 	return ieee80211_cancel_roc(local, cookie, false);
 }
 
+static int ieee80211_start_radar_detection(struct wiphy *wiphy,
+					   struct net_device *dev,
+					   struct cfg80211_chan_def *chandef)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_local *local = sdata->local;
+	unsigned long timeout;
+	int err;
+
+	if (!list_empty(&local->roc_list) || local->scanning)
+		return -EBUSY;
+
+	/* whatever, but channel contexts should not complain about that one */
+	sdata->smps_mode = IEEE80211_SMPS_OFF;
+	sdata->needed_rx_chains = local->rx_chains;
+	sdata->radar_required = true;
+
+	mutex_lock(&local->iflist_mtx);
+	err = ieee80211_vif_use_channel(sdata, chandef,
+					IEEE80211_CHANCTX_SHARED);
+	mutex_unlock(&local->iflist_mtx);
+	if (err)
+		return err;
+
+	timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
+	ieee80211_queue_delayed_work(&sdata->local->hw,
+				     &sdata->dfs_cac_timer_work, timeout);
+
+	return 0;
+}
+
 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
 			     struct ieee80211_channel *chan, bool offchan,
 			     unsigned int wait, const u8 *buf, size_t len,
@@ -3350,4 +3383,5 @@ struct cfg80211_ops mac80211_config_ops = {
 	.get_et_stats = ieee80211_get_et_stats,
 	.get_et_strings = ieee80211_get_et_strings,
 	.get_channel = ieee80211_cfg_get_channel,
+	.start_radar_detection = ieee80211_start_radar_detection,
 };
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index 038f249966d6..2e6faeda22ad 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -193,6 +193,7 @@ static void ieee80211_unassign_vif_chanctx(struct ieee80211_sub_if_data *sdata,
 	if (ctx->refcount > 0) {
 		ieee80211_recalc_chanctx_chantype(sdata->local, ctx);
 		ieee80211_recalc_smps_chanctx(local, ctx);
+		ieee80211_recalc_radar_chanctx(local, ctx);
 	}
 }
 
@@ -216,6 +217,37 @@ static void __ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata)
 		ieee80211_free_chanctx(local, ctx);
 }
 
+void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
+				    struct ieee80211_chanctx *chanctx)
+{
+	struct ieee80211_sub_if_data *sdata;
+	bool radar_enabled = false;
+
+	lockdep_assert_held(&local->chanctx_mtx);
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+		if (sdata->radar_required) {
+			radar_enabled = true;
+			break;
+		}
+	}
+	rcu_read_unlock();
+
+	if (radar_enabled == chanctx->conf.radar_enabled)
+		return;
+
+	chanctx->conf.radar_enabled = radar_enabled;
+	local->radar_detect_enabled = chanctx->conf.radar_enabled;
+
+	if (!local->use_chanctx) {
+		local->hw.conf.radar_enabled = chanctx->conf.radar_enabled;
+		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
+	}
+
+	drv_change_chanctx(local, chanctx, IEEE80211_CHANCTX_CHANGE_RADAR);
+}
+
 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
 				   struct ieee80211_chanctx *chanctx)
 {
@@ -331,6 +363,7 @@ int ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
 	}
 
 	ieee80211_recalc_smps_chanctx(local, ctx);
+	ieee80211_recalc_radar_chanctx(local, ctx);
  out:
 	mutex_unlock(&local->chanctx_mtx);
 	return ret;
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 76cdcfcd614c..0e0a9776be39 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -722,6 +722,9 @@ struct ieee80211_sub_if_data {
 	int user_power_level; /* in dBm */
 	int ap_power_level; /* in dBm */
 
+	bool radar_required;
+	struct delayed_work dfs_cac_timer_work;
+
 	/*
 	 * AP this belongs to: self in AP mode and
 	 * corresponding AP in VLAN mode, NULL for
@@ -942,6 +945,10 @@ struct ieee80211_local {
 	/* wowlan is enabled -- don't reconfig on resume */
 	bool wowlan;
 
+	/* DFS/radar detection is enabled */
+	bool radar_detect_enabled;
+	struct work_struct radar_detected_work;
+
 	/* number of RX chains the hardware has */
 	u8 rx_chains;
 
@@ -1606,6 +1613,13 @@ void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
 
 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
 				   struct ieee80211_chanctx *chanctx);
+void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
+				    struct ieee80211_chanctx *chanctx);
+
+void ieee80211_dfs_cac_timer(unsigned long data);
+void ieee80211_dfs_cac_timer_work(struct work_struct *work);
+void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
+void ieee80211_dfs_radar_detected_work(struct work_struct *work);
 
 #ifdef CONFIG_MAC80211_NOINLINE
 #define debug_noinline noinline
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 40ff0307d089..e9223ce2bf99 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -749,6 +749,16 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 
 	cancel_work_sync(&sdata->recalc_smps);
 
+	cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
+
+	if (sdata->wdev.cac_started) {
+		mutex_lock(&local->iflist_mtx);
+		ieee80211_vif_release_channel(sdata);
+		mutex_unlock(&local->iflist_mtx);
+		cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED,
+				   GFP_KERNEL);
+	}
+
 	/* APs need special treatment */
 	if (sdata->vif.type == NL80211_IFTYPE_AP) {
 		struct ieee80211_sub_if_data *vlan, *tmpsdata;
@@ -1513,6 +1523,8 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
 	spin_lock_init(&sdata->cleanup_stations_lock);
 	INIT_LIST_HEAD(&sdata->cleanup_stations);
 	INIT_WORK(&sdata->cleanup_stations_wk, ieee80211_cleanup_sdata_stas_wk);
+	INIT_DELAYED_WORK(&sdata->dfs_cac_timer_work,
+			  ieee80211_dfs_cac_timer_work);
 
 	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
 		struct ieee80211_supported_band *sband;
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 38b3468bc515..9cdbc774cfd7 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -621,6 +621,9 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
 
 	INIT_WORK(&local->restart_work, ieee80211_restart_work);
 
+	INIT_WORK(&local->radar_detected_work,
+		  ieee80211_dfs_radar_detected_work);
+
 	INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
 	local->smps_mode = IEEE80211_SMPS_OFF;
 
@@ -713,6 +716,16 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 		 */
 		if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
 			return -EINVAL;
+
+		/* DFS currently not supported with channel context drivers */
+		for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
+			const struct ieee80211_iface_combination *comb;
+
+			comb = &local->hw.wiphy->iface_combinations[i];
+
+			if (comb->radar_detect_widths)
+				return -EINVAL;
+		}
 	}
 
 	/* Only HW csum features are currently compatible with mac80211 */
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index efb22763d56d..7d4cde7af98e 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1212,6 +1212,19 @@ void ieee80211_dynamic_ps_timer(unsigned long data)
 	ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
 }
 
+void ieee80211_dfs_cac_timer_work(struct work_struct *work)
+{
+	struct delayed_work *delayed_work =
+		container_of(work, struct delayed_work, work);
+	struct ieee80211_sub_if_data *sdata =
+		container_of(delayed_work, struct ieee80211_sub_if_data,
+			     dfs_cac_timer_work);
+
+	ieee80211_vif_release_channel(sdata);
+
+	cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_FINISHED, GFP_KERNEL);
+}
+
 /* MLME */
 static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
 				     struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index 53801d20176d..d0275f34bf70 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -38,6 +38,8 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 
 	ieee80211_scan_cancel(local);
 
+	ieee80211_dfs_cac_cancel(local);
+
 	if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
 		mutex_lock(&local->sta_mtx);
 		list_for_each_entry(sta, &local->sta_list, list) {
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 6d0b89e4aa31..43a45cf00e06 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -351,6 +351,9 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local)
 static bool ieee80211_can_scan(struct ieee80211_local *local,
 			       struct ieee80211_sub_if_data *sdata)
 {
+	if (local->radar_detect_enabled)
+		return false;
+
 	if (!list_empty(&local->roc_list))
 		return false;
 
diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
index 0bdd7aeb8958..1183c4a4fee5 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -1862,6 +1862,25 @@ TRACE_EVENT(drv_set_default_unicast_key,
 		  LOCAL_PR_ARG, VIF_PR_ARG, __entry->key_idx)
 );
 
+TRACE_EVENT(api_radar_detected,
+	TP_PROTO(struct ieee80211_local *local),
+
+	TP_ARGS(local),
+
+	TP_STRUCT__entry(
+		LOCAL_ENTRY
+	),
+
+	TP_fast_assign(
+		LOCAL_ASSIGN;
+	),
+
+	TP_printk(
+		LOCAL_PR_FMT " radar detected",
+		LOCAL_PR_ARG
+	)
+);
+
 #ifdef CONFIG_MAC80211_MESSAGE_TRACING
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM mac80211_msg
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 6cb71a350edd..218cb52f2b59 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -2133,3 +2133,49 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
 
 	return ts;
 }
+
+void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
+{
+	struct ieee80211_sub_if_data *sdata;
+
+	mutex_lock(&local->iflist_mtx);
+	list_for_each_entry(sdata, &local->interfaces, list) {
+		cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
+
+		if (sdata->wdev.cac_started) {
+			ieee80211_vif_release_channel(sdata);
+			cfg80211_cac_event(sdata->dev,
+					   NL80211_RADAR_CAC_ABORTED,
+					   GFP_KERNEL);
+		}
+	}
+	mutex_unlock(&local->iflist_mtx);
+}
+
+void ieee80211_dfs_radar_detected_work(struct work_struct *work)
+{
+	struct ieee80211_local *local =
+		container_of(work, struct ieee80211_local, radar_detected_work);
+	struct cfg80211_chan_def chandef;
+
+	ieee80211_dfs_cac_cancel(local);
+
+	if (local->use_chanctx)
+		/* currently not handled */
+		WARN_ON(1);
+	else {
+		cfg80211_chandef_create(&chandef, local->hw.conf.channel,
+					local->hw.conf.channel_type);
+		cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
+	}
+}
+
+void ieee80211_radar_detected(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+
+	trace_api_radar_detected(local);
+
+	ieee80211_queue_work(hw, &local->radar_detected_work);
+}
+EXPORT_SYMBOL(ieee80211_radar_detected);
-- 
cgit v1.2.3


From 441a33baf1805861354fb9e3149c000311b6996f Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Tue, 12 Feb 2013 16:27:04 +0100
Subject: mac80211: don't pick up WPA vendor IE

There's no use for it, WPA is entirely handled in
wpa_supplicant in userspace, so don't pick the IE.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/ieee80211_i.h | 2 --
 net/mac80211/util.c        | 6 +-----
 2 files changed, 1 insertion(+), 7 deletions(-)

(limited to 'net/mac80211/util.c')

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 52bf954ef61c..8f9564460cb0 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1175,7 +1175,6 @@ struct ieee802_11_elems {
 	struct ieee80211_tim_ie *tim;
 	u8 *ibss_params;
 	u8 *challenge;
-	u8 *wpa;
 	u8 *rsn;
 	u8 *erp_info;
 	u8 *ext_supp_rates;
@@ -1208,7 +1207,6 @@ struct ieee802_11_elems {
 	u8 tim_len;
 	u8 ibss_params_len;
 	u8 challenge_len;
-	u8 wpa_len;
 	u8 rsn_len;
 	u8 erp_info_len;
 	u8 ext_supp_rates_len;
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 218cb52f2b59..b231bc2ed740 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -739,11 +739,7 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
 				if (calc_crc)
 					crc = crc32_be(crc, pos - 2, elen + 2);
 
-				if (pos[3] == 1) {
-					/* OUI Type 1 - WPA IE */
-					elems->wpa = pos;
-					elems->wpa_len = elen;
-				} else if (elen >= 5 && pos[3] == 2) {
+				if (elen >= 5 && pos[3] == 2) {
 					/* OUI Type 2 - WMM IE */
 					if (pos[4] == 0) {
 						elems->wmm_info = pos;
-- 
cgit v1.2.3


From bee7f58699a406a4210ba9e0367bae7ac666abd0 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 7 Feb 2013 22:24:55 +0100
Subject: mac80211: handle operating mode notif in beacon/assoc response

In beacons and association response frames an AP may include an
operating mode notification element to advertise changes in the
number of spatial streams it can receive. Handle this using the
existing function that handles the action frame, but only handle
NSS changes, not bandwidth changes which aren't allowed here.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/ieee80211_i.h |  3 ++-
 net/mac80211/mlme.c        | 26 +++++++++++++++++++++++---
 net/mac80211/rx.c          |  3 ++-
 net/mac80211/util.c        |  6 ++++++
 net/mac80211/vht.c         |  6 +++++-
 5 files changed, 38 insertions(+), 6 deletions(-)

(limited to 'net/mac80211/util.c')

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 4947c91c6c86..892bac64a189 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1197,6 +1197,7 @@ struct ieee802_11_elems {
 	u8 *pwr_constr_elem;
 	u8 *quiet_elem;	/* first quite element */
 	u8 *timeout_int;
+	u8 *opmode_notif;
 
 	/* length of them, respectively */
 	u8 ssid_len;
@@ -1435,7 +1436,7 @@ enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
 				 struct sta_info *sta, u8 opmode,
-				 enum ieee80211_band band);
+				 enum ieee80211_band band, bool nss_only);
 
 /* Spectrum management */
 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index e6da6bf8cc27..f2c6f7794f35 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2217,6 +2217,21 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 						  elems.ht_operation,
 						  cbss->bssid, false);
 
+	/*
+	 * If an operating mode notification IE is present, override the
+	 * NSS calculation (that would be done in rate_control_rate_init())
+	 * and use the # of streams from that element.
+	 */
+	if (elems.opmode_notif &&
+	    !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
+		u8 nss;
+
+		nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
+		nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
+		nss += 1;
+		sta->sta.rx_nss = nss;
+	}
+
 	rate_control_rate_init(sta);
 
 	if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)
@@ -2489,6 +2504,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_chanctx_conf *chanctx_conf;
 	struct ieee80211_channel *chan;
+	struct sta_info *sta;
 	u32 changed = 0;
 	bool erp_valid;
 	u8 erp_value = 0;
@@ -2728,14 +2744,18 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 			le16_to_cpu(mgmt->u.beacon.capab_info),
 			erp_valid, erp_value);
 
-
 	mutex_lock(&local->sta_mtx);
+	sta = sta_info_get(sdata, bssid);
+
 	if (elems.ht_cap_elem && elems.ht_operation && elems.wmm_param &&
 	    !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
-		changed |= ieee80211_config_ht_tx(sdata,
-						  sta_info_get(sdata, bssid),
+		changed |= ieee80211_config_ht_tx(sdata, sta,
 						  elems.ht_operation,
 						  bssid, true);
+
+	if (sta && elems.opmode_notif)
+		ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
+					    rx_status->band, true);
 	mutex_unlock(&local->sta_mtx);
 
 	if (elems.country_elem && elems.pwr_constr_elem &&
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 1617e0bd4ca6..30f1ba6de8f3 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2459,7 +2459,8 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
 			opmode = mgmt->u.action.u.vht_opmode_notif.operating_mode;
 
 			ieee80211_vht_handle_opmode(rx->sdata, rx->sta,
-						    opmode, status->band);
+						    opmode, status->band,
+						    false);
 			goto handled;
 		}
 		default:
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index b231bc2ed740..e24ff38606a9 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -787,6 +787,12 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
 			else
 				elem_parse_failed = true;
 			break;
+		case WLAN_EID_OPMODE_NOTIF:
+			if (elen > 0)
+				elems->opmode_notif = pos;
+			else
+				elem_parse_failed = true;
+			break;
 		case WLAN_EID_MESH_ID:
 			elems->mesh_id = pos;
 			elems->mesh_id_len = elen;
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index 0951f74e7ff5..a9549fcc5a04 100644
--- a/net/mac80211/vht.c
+++ b/net/mac80211/vht.c
@@ -141,7 +141,7 @@ void ieee80211_sta_set_rx_nss(struct sta_info *sta)
 
 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
 				 struct sta_info *sta, u8 opmode,
-				 enum ieee80211_band band)
+				 enum ieee80211_band band, bool nss_only)
 {
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_supported_band *sband;
@@ -164,6 +164,9 @@ void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
 		changed |= IEEE80211_RC_NSS_CHANGED;
 	}
 
+	if (nss_only)
+		goto change;
+
 	switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) {
 	case IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ:
 		sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_20;
@@ -185,6 +188,7 @@ void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
 		changed |= IEEE80211_RC_NSS_CHANGED;
 	}
 
+ change:
 	if (changed)
 		rate_control_rate_update(local, sband, sta, changed);
 }
-- 
cgit v1.2.3


From 4a3cb702b05868f67c4ee3da3380461c5b90b4ca Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Tue, 12 Feb 2013 16:43:19 +0100
Subject: mac80211: constify IE parsing

Make all the parsed IE pointers const, and propagate
the change to all the users etc.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 include/linux/ieee80211.h   |  2 +-
 net/mac80211/ht.c           |  2 +-
 net/mac80211/ieee80211_i.h  | 87 +++++++++++++++++++++++----------------------
 net/mac80211/mesh.h         | 11 +++---
 net/mac80211/mesh_hwmp.c    | 42 ++++++++++++----------
 net/mac80211/mesh_pathtbl.c | 11 +++---
 net/mac80211/mlme.c         | 15 ++++----
 net/mac80211/util.c         |  4 +--
 net/mac80211/vht.c          |  9 ++---
 9 files changed, 96 insertions(+), 87 deletions(-)

(limited to 'net/mac80211/util.c')

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 12b5996533ec..e085fcf52b26 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -2152,7 +2152,7 @@ static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
  * @tim_len: length of the TIM IE
  * @aid: the AID to look for
  */
-static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
+static inline bool ieee80211_check_tim(const struct ieee80211_tim_ie *tim,
 				       u8 tim_len, u16 aid)
 {
 	u8 mask;
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index 797969bc26e1..b84147ac5b4c 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -94,7 +94,7 @@ void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
 
 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
 				       struct ieee80211_supported_band *sband,
-				       struct ieee80211_ht_cap *ht_cap_ie,
+				       const struct ieee80211_ht_cap *ht_cap_ie,
 				       struct sta_info *sta)
 {
 	struct ieee80211_sta_ht_cap ht_cap;
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index d1074442f1b5..d702f7dc321b 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1163,41 +1163,41 @@ struct ieee80211_ra_tid {
 
 /* Parsed Information Elements */
 struct ieee802_11_elems {
-	u8 *ie_start;
+	const u8 *ie_start;
 	size_t total_len;
 
 	/* pointers to IEs */
-	u8 *ssid;
-	u8 *supp_rates;
-	u8 *fh_params;
-	u8 *ds_params;
-	u8 *cf_params;
-	struct ieee80211_tim_ie *tim;
-	u8 *ibss_params;
-	u8 *challenge;
-	u8 *rsn;
-	u8 *erp_info;
-	u8 *ext_supp_rates;
-	u8 *wmm_info;
-	u8 *wmm_param;
-	struct ieee80211_ht_cap *ht_cap_elem;
-	struct ieee80211_ht_operation *ht_operation;
-	struct ieee80211_vht_cap *vht_cap_elem;
-	struct ieee80211_vht_operation *vht_operation;
-	struct ieee80211_meshconf_ie *mesh_config;
-	u8 *mesh_id;
-	u8 *peering;
-	__le16 *awake_window;
-	u8 *preq;
-	u8 *prep;
-	u8 *perr;
-	struct ieee80211_rann_ie *rann;
-	struct ieee80211_channel_sw_ie *ch_switch_ie;
-	u8 *country_elem;
-	u8 *pwr_constr_elem;
-	u8 *quiet_elem;	/* first quite element */
-	u8 *timeout_int;
-	u8 *opmode_notif;
+	const u8 *ssid;
+	const u8 *supp_rates;
+	const u8 *fh_params;
+	const u8 *ds_params;
+	const u8 *cf_params;
+	const struct ieee80211_tim_ie *tim;
+	const u8 *ibss_params;
+	const u8 *challenge;
+	const u8 *rsn;
+	const u8 *erp_info;
+	const u8 *ext_supp_rates;
+	const u8 *wmm_info;
+	const u8 *wmm_param;
+	const struct ieee80211_ht_cap *ht_cap_elem;
+	const struct ieee80211_ht_operation *ht_operation;
+	const struct ieee80211_vht_cap *vht_cap_elem;
+	const struct ieee80211_vht_operation *vht_operation;
+	const struct ieee80211_meshconf_ie *mesh_config;
+	const u8 *mesh_id;
+	const u8 *peering;
+	const __le16 *awake_window;
+	const u8 *preq;
+	const u8 *prep;
+	const u8 *perr;
+	const struct ieee80211_rann_ie *rann;
+	const struct ieee80211_channel_sw_ie *ch_switch_ie;
+	const u8 *country_elem;
+	const u8 *pwr_constr_elem;
+	const u8 *quiet_elem;	/* first quite element */
+	const u8 *timeout_int;
+	const u8 *opmode_notif;
 
 	/* length of them, respectively */
 	u8 ssid_len;
@@ -1276,10 +1276,10 @@ void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
 int ieee80211_max_network_latency(struct notifier_block *nb,
 				  unsigned long data, void *dummy);
 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
-void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
-				      struct ieee80211_channel_sw_ie *sw_elem,
-				      struct ieee80211_bss *bss,
-				      u64 timestamp);
+void
+ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
+				 const struct ieee80211_channel_sw_ie *sw_elem,
+				 struct ieee80211_bss *bss, u64 timestamp);
 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
@@ -1387,7 +1387,7 @@ void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
 				     struct ieee80211_sta_ht_cap *ht_cap);
 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
 				       struct ieee80211_supported_band *sband,
-				       struct ieee80211_ht_cap *ht_cap_ie,
+				       const struct ieee80211_ht_cap *ht_cap_ie,
 				       struct sta_info *sta);
 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
 			  const u8 *da, u16 tid,
@@ -1428,10 +1428,11 @@ void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
 
 /* VHT */
-void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
-					 struct ieee80211_supported_band *sband,
-					 struct ieee80211_vht_cap *vht_cap_ie,
-					 struct sta_info *sta);
+void
+ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
+				    struct ieee80211_supported_band *sband,
+				    const struct ieee80211_vht_cap *vht_cap_ie,
+				    struct sta_info *sta);
 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
@@ -1555,7 +1556,7 @@ static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
 
 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
 			 u16 transaction, u16 auth_alg, u16 status,
-			 u8 *extra, size_t extra_len, const u8 *bssid,
+			 const u8 *extra, size_t extra_len, const u8 *bssid,
 			 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
 			 u32 tx_flags);
 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
@@ -1606,7 +1607,7 @@ int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
 
 /* channel management */
 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
-				  struct ieee80211_ht_operation *ht_oper,
+				  const struct ieee80211_ht_operation *ht_oper,
 				  struct cfg80211_chan_def *chandef);
 
 int __must_check
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 7ad035f0cacc..a1bad310f2e9 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -265,8 +265,8 @@ int mesh_nexthop_lookup(struct sk_buff *skb,
 int mesh_nexthop_resolve(struct sk_buff *skb,
 			 struct ieee80211_sub_if_data *sdata);
 void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata);
-struct mesh_path *mesh_path_lookup(u8 *dst,
-		struct ieee80211_sub_if_data *sdata);
+struct mesh_path *mesh_path_lookup(const u8 *dst,
+				   struct ieee80211_sub_if_data *sdata);
 struct mesh_path *mpp_path_lookup(u8 *dst,
 				  struct ieee80211_sub_if_data *sdata);
 int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata);
@@ -276,7 +276,7 @@ void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
 void mesh_path_expire(struct ieee80211_sub_if_data *sdata);
 void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
 		struct ieee80211_mgmt *mgmt, size_t len);
-int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata);
+int mesh_path_add(const u8 *dst, struct ieee80211_sub_if_data *sdata);
 
 int mesh_path_add_gate(struct mesh_path *mpath);
 int mesh_path_send_to_gates(struct mesh_path *mpath);
@@ -301,8 +301,9 @@ void mesh_sta_cleanup(struct sta_info *sta);
 void mesh_mpath_table_grow(void);
 void mesh_mpp_table_grow(void);
 /* Mesh paths */
-int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn, __le16 target_rcode,
-		       const u8 *ra, struct ieee80211_sub_if_data *sdata);
+int mesh_path_error_tx(u8 ttl, const u8 *target, __le32 target_sn,
+		       __le16 target_rcode, const u8 *ra,
+		       struct ieee80211_sub_if_data *sdata);
 void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta);
 void mesh_path_flush_pending(struct mesh_path *mpath);
 void mesh_path_tx_pending(struct mesh_path *mpath);
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index f0dd8742ed42..585c1e26cca8 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -30,14 +30,14 @@
 
 static void mesh_queue_preq(struct mesh_path *, u8);
 
-static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae)
+static inline u32 u32_field_get(const u8 *preq_elem, int offset, bool ae)
 {
 	if (ae)
 		offset += 6;
 	return get_unaligned_le32(preq_elem + offset);
 }
 
-static inline u32 u16_field_get(u8 *preq_elem, int offset, bool ae)
+static inline u32 u16_field_get(const u8 *preq_elem, int offset, bool ae)
 {
 	if (ae)
 		offset += 6;
@@ -102,10 +102,13 @@ enum mpath_frame_type {
 static const u8 broadcast_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 
 static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
-		u8 *orig_addr, __le32 orig_sn, u8 target_flags, u8 *target,
-		__le32 target_sn, const u8 *da, u8 hop_count, u8 ttl,
-		__le32 lifetime, __le32 metric, __le32 preq_id,
-		struct ieee80211_sub_if_data *sdata)
+				  const u8 *orig_addr, __le32 orig_sn,
+				  u8 target_flags, const u8 *target,
+				  __le32 target_sn, const u8 *da,
+				  u8 hop_count, u8 ttl,
+				  __le32 lifetime, __le32 metric,
+				  __le32 preq_id,
+				  struct ieee80211_sub_if_data *sdata)
 {
 	struct ieee80211_local *local = sdata->local;
 	struct sk_buff *skb;
@@ -235,7 +238,7 @@ static void prepare_frame_for_deferred_tx(struct ieee80211_sub_if_data *sdata,
  * also acquires in the TX path.  To avoid a deadlock we don't transmit the
  * frame directly but add it to the pending queue instead.
  */
-int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
+int mesh_path_error_tx(u8 ttl, const u8 *target, __le32 target_sn,
 		       __le16 target_rcode, const u8 *ra,
 		       struct ieee80211_sub_if_data *sdata)
 {
@@ -369,14 +372,14 @@ static u32 airtime_link_metric_get(struct ieee80211_local *local,
  * path routing information is updated.
  */
 static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
-			    struct ieee80211_mgmt *mgmt,
-			    u8 *hwmp_ie, enum mpath_frame_type action)
+			       struct ieee80211_mgmt *mgmt,
+			       const u8 *hwmp_ie, enum mpath_frame_type action)
 {
 	struct ieee80211_local *local = sdata->local;
 	struct mesh_path *mpath;
 	struct sta_info *sta;
 	bool fresh_info;
-	u8 *orig_addr, *ta;
+	const u8 *orig_addr, *ta;
 	u32 orig_sn, orig_metric;
 	unsigned long orig_lifetime, exp_time;
 	u32 last_hop_metric, new_metric;
@@ -511,11 +514,11 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
 
 static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
 				    struct ieee80211_mgmt *mgmt,
-				    u8 *preq_elem, u32 metric)
+				    const u8 *preq_elem, u32 metric)
 {
 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 	struct mesh_path *mpath = NULL;
-	u8 *target_addr, *orig_addr;
+	const u8 *target_addr, *orig_addr;
 	const u8 *da;
 	u8 target_flags, ttl, flags;
 	u32 orig_sn, target_sn, lifetime, orig_metric;
@@ -648,11 +651,11 @@ next_hop_deref_protected(struct mesh_path *mpath)
 
 static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
 				    struct ieee80211_mgmt *mgmt,
-				    u8 *prep_elem, u32 metric)
+				    const u8 *prep_elem, u32 metric)
 {
 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 	struct mesh_path *mpath;
-	u8 *target_addr, *orig_addr;
+	const u8 *target_addr, *orig_addr;
 	u8 ttl, hopcount, flags;
 	u8 next_hop[ETH_ALEN];
 	u32 target_sn, orig_sn, lifetime;
@@ -711,12 +714,13 @@ fail:
 }
 
 static void hwmp_perr_frame_process(struct ieee80211_sub_if_data *sdata,
-			     struct ieee80211_mgmt *mgmt, u8 *perr_elem)
+				    struct ieee80211_mgmt *mgmt,
+				    const u8 *perr_elem)
 {
 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 	struct mesh_path *mpath;
 	u8 ttl;
-	u8 *ta, *target_addr;
+	const u8 *ta, *target_addr;
 	u32 target_sn;
 	u16 target_rcode;
 
@@ -758,15 +762,15 @@ endperr:
 }
 
 static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
-				struct ieee80211_mgmt *mgmt,
-				struct ieee80211_rann_ie *rann)
+				    struct ieee80211_mgmt *mgmt,
+				    const struct ieee80211_rann_ie *rann)
 {
 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 	struct ieee80211_local *local = sdata->local;
 	struct sta_info *sta;
 	struct mesh_path *mpath;
 	u8 ttl, flags, hopcount;
-	u8 *orig_addr;
+	const u8 *orig_addr;
 	u32 orig_sn, metric, metric_txsta, interval;
 	bool root_is_gate;
 
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index d5786c3eaee2..2ce4c4023a97 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -181,7 +181,7 @@ errcopy:
 	return -ENOMEM;
 }
 
-static u32 mesh_table_hash(u8 *addr, struct ieee80211_sub_if_data *sdata,
+static u32 mesh_table_hash(const u8 *addr, struct ieee80211_sub_if_data *sdata,
 			   struct mesh_table *tbl)
 {
 	/* Use last four bytes of hw addr and interface index as hash index */
@@ -326,8 +326,8 @@ static void mesh_path_move_to_queue(struct mesh_path *gate_mpath,
 }
 
 
-static struct mesh_path *mpath_lookup(struct mesh_table *tbl, u8 *dst,
-					  struct ieee80211_sub_if_data *sdata)
+static struct mesh_path *mpath_lookup(struct mesh_table *tbl, const u8 *dst,
+				      struct ieee80211_sub_if_data *sdata)
 {
 	struct mesh_path *mpath;
 	struct hlist_node *n;
@@ -359,7 +359,8 @@ static struct mesh_path *mpath_lookup(struct mesh_table *tbl, u8 *dst,
  *
  * Locking: must be called within a read rcu section.
  */
-struct mesh_path *mesh_path_lookup(u8 *dst, struct ieee80211_sub_if_data *sdata)
+struct mesh_path *mesh_path_lookup(const u8 *dst,
+				   struct ieee80211_sub_if_data *sdata)
 {
 	return mpath_lookup(rcu_dereference(mesh_paths), dst, sdata);
 }
@@ -494,7 +495,7 @@ int mesh_gate_num(struct ieee80211_sub_if_data *sdata)
  *
  * State: the initial state of the new path is set to 0
  */
-int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata)
+int mesh_path_add(const u8 *dst, struct ieee80211_sub_if_data *sdata)
 {
 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 	struct ieee80211_local *local = sdata->local;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 05b229e3b226..7a8cd789e487 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1041,10 +1041,10 @@ static void ieee80211_chswitch_timer(unsigned long data)
 	ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
 }
 
-void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
-				      struct ieee80211_channel_sw_ie *sw_elem,
-				      struct ieee80211_bss *bss,
-				      u64 timestamp)
+void
+ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
+				 const struct ieee80211_channel_sw_ie *sw_elem,
+				 struct ieee80211_bss *bss, u64 timestamp)
 {
 	struct cfg80211_bss *cbss =
 		container_of((void *)bss, struct cfg80211_bss, priv);
@@ -1479,13 +1479,14 @@ void ieee80211_dfs_cac_timer_work(struct work_struct *work)
 /* MLME */
 static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
 				     struct ieee80211_sub_if_data *sdata,
-				     u8 *wmm_param, size_t wmm_param_len)
+				     const u8 *wmm_param, size_t wmm_param_len)
 {
 	struct ieee80211_tx_queue_params params;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	size_t left;
 	int count;
-	u8 *pos, uapsd_queues = 0;
+	const u8 *pos;
+	u8 uapsd_queues = 0;
 
 	if (!local->ops->conf_tx)
 		return false;
@@ -2670,7 +2671,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 		need_ps = sdata->u.mgd.associated && !sdata->u.mgd.dtim_period;
 
 		if (elems->tim && !elems->parse_error) {
-			struct ieee80211_tim_ie *tim_ie = elems->tim;
+			const struct ieee80211_tim_ie *tim_ie = elems->tim;
 			sdata->u.mgd.dtim_period = tim_ie->dtim_period;
 		}
 	}
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index e24ff38606a9..0f38f43ac62e 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1035,7 +1035,7 @@ u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
 
 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
 			 u16 transaction, u16 auth_alg, u16 status,
-			 u8 *extra, size_t extra_len, const u8 *da,
+			 const u8 *extra, size_t extra_len, const u8 *da,
 			 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
 			 u32 tx_flags)
 {
@@ -1947,7 +1947,7 @@ u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
 }
 
 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
-				  struct ieee80211_ht_operation *ht_oper,
+				  const struct ieee80211_ht_operation *ht_oper,
 				  struct cfg80211_chan_def *chandef)
 {
 	enum nl80211_channel_type channel_type;
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index a9549fcc5a04..a2c2258bc84e 100644
--- a/net/mac80211/vht.c
+++ b/net/mac80211/vht.c
@@ -13,10 +13,11 @@
 #include "rate.h"
 
 
-void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
-					 struct ieee80211_supported_band *sband,
-					 struct ieee80211_vht_cap *vht_cap_ie,
-					 struct sta_info *sta)
+void
+ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
+				    struct ieee80211_supported_band *sband,
+				    const struct ieee80211_vht_cap *vht_cap_ie,
+				    struct sta_info *sta)
 {
 	struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap;
 
-- 
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