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Diffstat (limited to 'net/mac80211/pm.c')
-rw-r--r--net/mac80211/pm.c182
1 files changed, 58 insertions, 124 deletions
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index 81985d27cbda..7a549f9deb96 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -2,6 +2,8 @@
 #include <net/rtnetlink.h>
 
 #include "ieee80211_i.h"
+#include "mesh.h"
+#include "driver-ops.h"
 #include "led.h"
 
 int __ieee80211_suspend(struct ieee80211_hw *hw)
@@ -12,11 +14,30 @@ int __ieee80211_suspend(struct ieee80211_hw *hw)
 	struct sta_info *sta;
 	unsigned long flags;
 
+	ieee80211_scan_cancel(local);
+
 	ieee80211_stop_queues_by_reason(hw,
 			IEEE80211_QUEUE_STOP_REASON_SUSPEND);
 
+	/* flush out all packets */
+	synchronize_net();
+
+	local->quiescing = true;
+	/* make quiescing visible to timers everywhere */
+	mb();
+
 	flush_workqueue(local->hw.workqueue);
 
+	/* Don't try to run timers while suspended. */
+	del_timer_sync(&local->sta_cleanup);
+
+	 /*
+	 * Note that this particular timer doesn't need to be
+	 * restarted at resume.
+	 */
+	cancel_work_sync(&local->dynamic_ps_enable_work);
+	del_timer_sync(&local->dynamic_ps_timer);
+
 	/* disable keys */
 	list_for_each_entry(sdata, &local->interfaces, list)
 		ieee80211_disable_keys(sdata);
@@ -34,157 +55,70 @@ int __ieee80211_suspend(struct ieee80211_hw *hw)
 
 	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 */
+	/* stop hardware - this must stop RX */
 	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);
+		drv_stop(local);
 	}
 
-	/* 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) {
+	/* remove STAs */
+	spin_lock_irqsave(&local->sta_lock, flags);
+	list_for_each_entry(sta, &local->sta_list, list) {
+		if (local->ops->sta_notify) {
+			sdata = sta->sdata;
 			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);
+			drv_sta_notify(local, &sdata->vif, STA_NOTIFY_REMOVE,
+				       &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);
-		}
+		mesh_plink_quiesce(sta);
 	}
+	spin_unlock_irqrestore(&local->sta_lock, flags);
 
-	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 */
+	/* remove all interfaces */
 	list_for_each_entry(sdata, &local->interfaces, list) {
-		u32 changed = ~0;
-		if (!netif_running(sdata->dev))
-			continue;
-		switch (sdata->vif.type) {
+		switch(sdata->vif.type) {
 		case NL80211_IFTYPE_STATION:
-			/* disable beacon change bits */
-			changed &= ~IEEE80211_IFCC_BEACON;
-			/* fall through */
+			ieee80211_sta_quiesce(sdata);
+			break;
 		case NL80211_IFTYPE_ADHOC:
-		case NL80211_IFTYPE_AP:
-		case NL80211_IFTYPE_MESH_POINT:
-			/*
-			 * Driver's config_interface can fail if rfkill is
-			 * enabled. Accommodate this return code.
-			 * FIXME: When mac80211 has knowledge of rfkill
-			 * state the code below can change back to:
-			 *   WARN(ieee80211_if_config(sdata, changed));
-			 *   ieee80211_bss_info_change_notify(sdata, ~0);
-			 */
-			if (ieee80211_if_config(sdata, changed))
-				printk(KERN_DEBUG "%s: failed to configure interface during resume\n",
-				       sdata->dev->name);
-			else
-				ieee80211_bss_info_change_notify(sdata, ~0);
+			ieee80211_ibss_quiesce(sdata);
 			break;
-		case NL80211_IFTYPE_WDS:
+		case NL80211_IFTYPE_MESH_POINT:
+			ieee80211_mesh_quiesce(sdata);
 			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);
+			/* don't tell driver about this */
+			continue;
+		default:
 			break;
 		}
+
+		if (!netif_running(sdata->dev))
+			continue;
+
+		conf.vif = &sdata->vif;
+		conf.type = sdata->vif.type;
+		conf.mac_addr = sdata->dev->dev_addr;
+		drv_remove_interface(local, &conf);
 	}
 
-	ieee80211_wake_queues_by_reason(hw,
-			IEEE80211_QUEUE_STOP_REASON_SUSPEND);
+	local->suspended = true;
+	local->quiescing = false;
 
 	return 0;
 }
+
+/*
+ * __ieee80211_resume() is a static inline which just calls
+ * ieee80211_reconfig(), which is also needed for hardware
+ * hang/firmware failure/etc. recovery.
+ */
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-09-25 01:29:49 +0000