Merge branch 'linus' into cpumask-for-linus

Conflicts:
	arch/x86/kernel/cpu/common.c

1 files changed, 179 insertions, 0 deletions

diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
new file mode 100644
index 00000000000..02730232649
--- /dev/null
+++ b/net/mac80211/pm.c
@@ -0,0 +1,179 @@
+#include <net/mac80211.h>
+#include <net/rtnetlink.h>
+
+#include "ieee80211_i.h"
+#include "led.h"
+
+int __ieee80211_suspend(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_if_init_conf conf;
+	struct sta_info *sta;
+	unsigned long flags;
+
+	ieee80211_stop_queues_by_reason(hw,
+			IEEE80211_QUEUE_STOP_REASON_SUSPEND);
+
+	flush_workqueue(local->hw.workqueue);
+
+	/* disable keys */
+	list_for_each_entry(sdata, &local->interfaces, list)
+		ieee80211_disable_keys(sdata);
+
+	/* Tear down aggregation sessions */
+
+	rcu_read_lock();
+
+	if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
+		list_for_each_entry_rcu(sta, &local->sta_list, list) {
+			set_sta_flags(sta, WLAN_STA_SUSPEND);
+			ieee80211_sta_tear_down_BA_sessions(sta);
+		}
+	}
+
+	rcu_read_unlock();
+
+	/* remove STAs */
+	if (local->ops->sta_notify) {
+		spin_lock_irqsave(&local->sta_lock, flags);
+		list_for_each_entry(sta, &local->sta_list, list) {
+			if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+				sdata = container_of(sdata->bss,
+					     struct ieee80211_sub_if_data,
+					     u.ap);
+
+			local->ops->sta_notify(hw, &sdata->vif,
+				STA_NOTIFY_REMOVE, &sta->sta);
+		}
+		spin_unlock_irqrestore(&local->sta_lock, flags);
+	}
+
+	/* remove all interfaces */
+	list_for_each_entry(sdata, &local->interfaces, list) {
+		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
+		    sdata->vif.type != NL80211_IFTYPE_MONITOR &&
+		    netif_running(sdata->dev)) {
+			conf.vif = &sdata->vif;
+			conf.type = sdata->vif.type;
+			conf.mac_addr = sdata->dev->dev_addr;
+			local->ops->remove_interface(hw, &conf);
+		}
+	}
+
+	/* flush again, in case driver queued work */
+	flush_workqueue(local->hw.workqueue);
+
+	/* stop hardware */
+	if (local->open_count) {
+		ieee80211_led_radio(local, false);
+		local->ops->stop(hw);
+	}
+	return 0;
+}
+
+int __ieee80211_resume(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_if_init_conf conf;
+	struct sta_info *sta;
+	unsigned long flags;
+	int res;
+
+	/* restart hardware */
+	if (local->open_count) {
+		res = local->ops->start(hw);
+
+		ieee80211_led_radio(local, hw->conf.radio_enabled);
+	}
+
+	/* add interfaces */
+	list_for_each_entry(sdata, &local->interfaces, list) {
+		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
+		    sdata->vif.type != NL80211_IFTYPE_MONITOR &&
+		    netif_running(sdata->dev)) {
+			conf.vif = &sdata->vif;
+			conf.type = sdata->vif.type;
+			conf.mac_addr = sdata->dev->dev_addr;
+			res = local->ops->add_interface(hw, &conf);
+		}
+	}
+
+	/* add STAs back */
+	if (local->ops->sta_notify) {
+		spin_lock_irqsave(&local->sta_lock, flags);
+		list_for_each_entry(sta, &local->sta_list, list) {
+			if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+				sdata = container_of(sdata->bss,
+					     struct ieee80211_sub_if_data,
+					     u.ap);
+
+			local->ops->sta_notify(hw, &sdata->vif,
+				STA_NOTIFY_ADD, &sta->sta);
+		}
+		spin_unlock_irqrestore(&local->sta_lock, flags);
+	}
+
+	/* Clear Suspend state so that ADDBA requests can be processed */
+
+	rcu_read_lock();
+
+	if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
+		list_for_each_entry_rcu(sta, &local->sta_list, list) {
+			clear_sta_flags(sta, WLAN_STA_SUSPEND);
+		}
+	}
+
+	rcu_read_unlock();
+
+	/* add back keys */
+	list_for_each_entry(sdata, &local->interfaces, list)
+		if (netif_running(sdata->dev))
+			ieee80211_enable_keys(sdata);
+
+	/* setup RTS threshold */
+	if (local->ops->set_rts_threshold)
+		local->ops->set_rts_threshold(hw, local->rts_threshold);
+
+	/* reconfigure hardware */
+	ieee80211_hw_config(local, ~0);
+
+	netif_addr_lock_bh(local->mdev);
+	ieee80211_configure_filter(local);
+	netif_addr_unlock_bh(local->mdev);
+
+	/* Finally also reconfigure all the BSS information */
+	list_for_each_entry(sdata, &local->interfaces, list) {
+		u32 changed = ~0;
+		if (!netif_running(sdata->dev))
+			continue;
+		switch (sdata->vif.type) {
+		case NL80211_IFTYPE_STATION:
+			/* disable beacon change bits */
+			changed &= ~IEEE80211_IFCC_BEACON;
+			/* fall through */
+		case NL80211_IFTYPE_ADHOC:
+		case NL80211_IFTYPE_AP:
+		case NL80211_IFTYPE_MESH_POINT:
+			WARN_ON(ieee80211_if_config(sdata, changed));
+			ieee80211_bss_info_change_notify(sdata, ~0);
+			break;
+		case NL80211_IFTYPE_WDS:
+			break;
+		case NL80211_IFTYPE_AP_VLAN:
+		case NL80211_IFTYPE_MONITOR:
+			/* ignore virtual */
+			break;
+		case NL80211_IFTYPE_UNSPECIFIED:
+		case __NL80211_IFTYPE_AFTER_LAST:
+			WARN_ON(1);
+			break;
+		}
+	}
+
+	ieee80211_wake_queues_by_reason(hw,
+			IEEE80211_QUEUE_STOP_REASON_SUSPEND);
+
+	return 0;
+}