f2753ddbad
Some hardware defects may require the hardware to be re-initialised completely from scratch. Drivers would need much information (for instance the current MAC address, crypto keys, beaconing information, etc.) stored duplicated from mac80211 to be able to do this, so let mac80211 help them. The new ieee80211_restart_hw() function requires the same code as resuming, so move that code into a new ieee80211_reconfig() function in util.c and leave only the suspend code in pm.c. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
80 lines
2 KiB
C
80 lines
2 KiB
C
#include <net/mac80211.h>
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#include <net/rtnetlink.h>
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#include "ieee80211_i.h"
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#include "led.h"
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int __ieee80211_suspend(struct ieee80211_hw *hw)
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct ieee80211_sub_if_data *sdata;
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struct ieee80211_if_init_conf conf;
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struct sta_info *sta;
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unsigned long flags;
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ieee80211_stop_queues_by_reason(hw,
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IEEE80211_QUEUE_STOP_REASON_SUSPEND);
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flush_workqueue(local->hw.workqueue);
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/* disable keys */
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list_for_each_entry(sdata, &local->interfaces, list)
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ieee80211_disable_keys(sdata);
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/* Tear down aggregation sessions */
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rcu_read_lock();
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if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
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list_for_each_entry_rcu(sta, &local->sta_list, list) {
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set_sta_flags(sta, WLAN_STA_SUSPEND);
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ieee80211_sta_tear_down_BA_sessions(sta);
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}
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}
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rcu_read_unlock();
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/* remove STAs */
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if (local->ops->sta_notify) {
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spin_lock_irqsave(&local->sta_lock, flags);
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list_for_each_entry(sta, &local->sta_list, list) {
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if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
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sdata = container_of(sdata->bss,
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struct ieee80211_sub_if_data,
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u.ap);
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local->ops->sta_notify(hw, &sdata->vif,
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STA_NOTIFY_REMOVE, &sta->sta);
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}
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spin_unlock_irqrestore(&local->sta_lock, flags);
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}
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/* remove all interfaces */
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list_for_each_entry(sdata, &local->interfaces, list) {
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if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
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sdata->vif.type != NL80211_IFTYPE_MONITOR &&
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netif_running(sdata->dev)) {
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conf.vif = &sdata->vif;
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conf.type = sdata->vif.type;
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conf.mac_addr = sdata->dev->dev_addr;
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local->ops->remove_interface(hw, &conf);
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}
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}
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/* flush again, in case driver queued work */
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flush_workqueue(local->hw.workqueue);
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/* stop hardware */
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if (local->open_count) {
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ieee80211_led_radio(local, false);
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local->ops->stop(hw);
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}
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return 0;
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}
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/*
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* __ieee80211_resume() is a static inline which just calls
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* ieee80211_reconfig(), which is also needed for hardware
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* hang/firmware failure/etc. recovery.
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*/
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