[linux.git] / net / mac80211 / pm.c

#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;
}
Commit	Line	Data
665af4fc BC	1	#include <net/mac80211.h>
	2	#include <net/rtnetlink.h>
	3
	4	#include "ieee80211_i.h"
	5	#include "led.h"
	6
	7	int __ieee80211_suspend(struct ieee80211_hw *hw)
	8	{
	9	struct ieee80211_local *local = hw_to_local(hw);
	10	struct ieee80211_sub_if_data *sdata;
	11	struct ieee80211_if_init_conf conf;
	12	struct sta_info *sta;
7f0216a4	13	unsigned long flags;
665af4fc	14
25420604 JB	15	ieee80211_stop_queues_by_reason(hw,
	16	IEEE80211_QUEUE_STOP_REASON_SUSPEND);
	17
665af4fc BC	18	flush_workqueue(local->hw.workqueue);
	19
	20	/* disable keys */
	21	list_for_each_entry(sdata, &local->interfaces, list)
	22	ieee80211_disable_keys(sdata);
	23
722f069a S	24	/* Tear down aggregation sessions */
	25
	26	rcu_read_lock();
	27
	28	if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
	29	list_for_each_entry_rcu(sta, &local->sta_list, list) {
	30	set_sta_flags(sta, WLAN_STA_SUSPEND);
	31	ieee80211_sta_tear_down_BA_sessions(sta);
	32	}
	33	}
	34
	35	rcu_read_unlock();
	36
665af4fc	37	/* remove STAs */
7f0216a4 JB	38	if (local->ops->sta_notify) {
	39	spin_lock_irqsave(&local->sta_lock, flags);
	40	list_for_each_entry(sta, &local->sta_list, list) {
665af4fc BC	41	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
	42	sdata = container_of(sdata->bss,
	43	struct ieee80211_sub_if_data,
	44	u.ap);
	45
	46	local->ops->sta_notify(hw, &sdata->vif,
	47	STA_NOTIFY_REMOVE, &sta->sta);
	48	}
7f0216a4	49	spin_unlock_irqrestore(&local->sta_lock, flags);
665af4fc BC	50	}
	51
	52	/* remove all interfaces */
	53	list_for_each_entry(sdata, &local->interfaces, list) {
665af4fc BC	54	if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
	55	sdata->vif.type != NL80211_IFTYPE_MONITOR &&
	56	netif_running(sdata->dev)) {
	57	conf.vif = &sdata->vif;
	58	conf.type = sdata->vif.type;
	59	conf.mac_addr = sdata->dev->dev_addr;
	60	local->ops->remove_interface(hw, &conf);
	61	}
	62	}
	63
e874e658 BC	64	/* flush again, in case driver queued work */
	65	flush_workqueue(local->hw.workqueue);
	66
665af4fc BC	67	/* stop hardware */
	68	if (local->open_count) {
	69	ieee80211_led_radio(local, false);
	70	local->ops->stop(hw);
	71	}
	72	return 0;
	73	}
	74
	75	int __ieee80211_resume(struct ieee80211_hw *hw)
	76	{
	77	struct ieee80211_local *local = hw_to_local(hw);
	78	struct ieee80211_sub_if_data *sdata;
	79	struct ieee80211_if_init_conf conf;
	80	struct sta_info *sta;
7f0216a4	81	unsigned long flags;
665af4fc BC	82	int res;
	83
	84	/* restart hardware */
	85	if (local->open_count) {
	86	res = local->ops->start(hw);
	87
	88	ieee80211_led_radio(local, hw->conf.radio_enabled);
	89	}
	90
	91	/* add interfaces */
	92	list_for_each_entry(sdata, &local->interfaces, list) {
665af4fc BC	93	if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
	94	sdata->vif.type != NL80211_IFTYPE_MONITOR &&
	95	netif_running(sdata->dev)) {
	96	conf.vif = &sdata->vif;
	97	conf.type = sdata->vif.type;
	98	conf.mac_addr = sdata->dev->dev_addr;
	99	res = local->ops->add_interface(hw, &conf);
	100	}
	101	}
	102
	103	/* add STAs back */
7f0216a4 JB	104	if (local->ops->sta_notify) {
	105	spin_lock_irqsave(&local->sta_lock, flags);
	106	list_for_each_entry(sta, &local->sta_list, list) {
665af4fc BC	107	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
	108	sdata = container_of(sdata->bss,
	109	struct ieee80211_sub_if_data,
	110	u.ap);
	111
	112	local->ops->sta_notify(hw, &sdata->vif,
	113	STA_NOTIFY_ADD, &sta->sta);
	114	}
7f0216a4	115	spin_unlock_irqrestore(&local->sta_lock, flags);
665af4fc BC	116	}
665af4fc BC	117
722f069a S	118	/* Clear Suspend state so that ADDBA requests can be processed */
	119
	120	rcu_read_lock();
	121
	122	if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
	123	list_for_each_entry_rcu(sta, &local->sta_list, list) {
	124	clear_sta_flags(sta, WLAN_STA_SUSPEND);
	125	}
	126	}
	127
	128	rcu_read_unlock();
	129
665af4fc BC	130	/* add back keys */
	131	list_for_each_entry(sdata, &local->interfaces, list)
	132	if (netif_running(sdata->dev))
	133	ieee80211_enable_keys(sdata);
	134
	135	/* setup RTS threshold */
	136	if (local->ops->set_rts_threshold)
	137	local->ops->set_rts_threshold(hw, local->rts_threshold);
	138
	139	/* reconfigure hardware */
	140	ieee80211_hw_config(local, ~0);
	141
	142	netif_addr_lock_bh(local->mdev);
	143	ieee80211_configure_filter(local);
	144	netif_addr_unlock_bh(local->mdev);
	145
827b1fb4 JB	146	/* Finally also reconfigure all the BSS information */
	147	list_for_each_entry(sdata, &local->interfaces, list) {
	148	u32 changed = ~0;
	149	if (!netif_running(sdata->dev))
	150	continue;
	151	switch (sdata->vif.type) {
	152	case NL80211_IFTYPE_STATION:
	153	/* disable beacon change bits */
	154	changed &= ~IEEE80211_IFCC_BEACON;
	155	/* fall through */
	156	case NL80211_IFTYPE_ADHOC:
	157	case NL80211_IFTYPE_AP:
	158	case NL80211_IFTYPE_MESH_POINT:
	159	WARN_ON(ieee80211_if_config(sdata, changed));
	160	ieee80211_bss_info_change_notify(sdata, ~0);
	161	break;
	162	case NL80211_IFTYPE_WDS:
	163	break;
	164	case NL80211_IFTYPE_AP_VLAN:
	165	case NL80211_IFTYPE_MONITOR:
	166	/* ignore virtual */
	167	break;
	168	case NL80211_IFTYPE_UNSPECIFIED:
	169	case __NL80211_IFTYPE_AFTER_LAST:
	170	WARN_ON(1);
	171	break;
	172	}
	173	}
	174
25420604 JB	175	ieee80211_wake_queues_by_reason(hw,
	176	IEEE80211_QUEUE_STOP_REASON_SUSPEND);
	177
665af4fc BC	178	return 0;
665af4fc BC	179	}