aboutsummaryrefslogtreecommitdiffstats
path: root/net/mac80211/pm.c
diff options
context:
space:
mode:
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.
+ */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.