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mac80211: cleanup generic suspend/resume procedures

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Since now we disconnect before suspend, various code which save
connection state can now be removed from suspend and resume
procedure. Cleanup on resume side is smaller as ieee80211_reconfig()
is also used for H/W restart.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Stanislaw Gruszka 2013-02-28 10:55:26 +01:00 committed by Johannes Berg
parent 8125696991
commit 12e7f51702
5 changed files with 6 additions and 154 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/mac80211/ieee80211_i.h
View File

@ -768,10 +768,6 @@ struct ieee80211_sub_if_data {
} debugfs;
#endif
#ifdef CONFIG_PM
struct ieee80211_bss_conf suspend_bss_conf;
#endif
/* must be last, dynamically sized area in this! */
struct ieee80211_vif vif;
};

14
net/mac80211/key.c
View File

@ -566,20 +566,6 @@ void ieee80211_iter_keys(struct ieee80211_hw *hw,
}
EXPORT_SYMBOL(ieee80211_iter_keys);
void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_key *key;
ASSERT_RTNL();
mutex_lock(&sdata->local->key_mtx);
list_for_each_entry(key, &sdata->key_list, list)
ieee80211_key_disable_hw_accel(key);
mutex_unlock(&sdata->local->key_mtx);
}
void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_key *key, *tmp;

1
net/mac80211/key.h
View File

@ -143,7 +143,6 @@ void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata,
int idx);
void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata);
void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata);
void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata);
#define key_mtx_dereference(local, ref) \
rcu_dereference_protected(ref, lockdep_is_held(&((local)->key_mtx)))

115
net/mac80211/pm.c
View File

@ -6,32 +6,11 @@
#include "driver-ops.h"
#include "led.h"
/* return value indicates whether the driver should be further notified */
static void ieee80211_quiesce(struct ieee80211_sub_if_data *sdata)
{
switch (sdata->vif.type) {
case NL80211_IFTYPE_STATION:
ieee80211_sta_quiesce(sdata);
break;
case NL80211_IFTYPE_ADHOC:
ieee80211_ibss_quiesce(sdata);
break;
case NL80211_IFTYPE_MESH_POINT:
ieee80211_mesh_quiesce(sdata);
break;
default:
break;
}
cancel_work_sync(&sdata->work);
}
int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
struct ieee80211_chanctx *ctx;
if (!local->open_count)
goto suspend;
@ -95,17 +74,10 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
WARN_ON(err != 1);
return err;
} else {
list_for_each_entry(sdata, &local->interfaces, list)
if (ieee80211_sdata_running(sdata))
ieee80211_quiesce(sdata);
goto suspend;
}
}
/* disable keys */
list_for_each_entry(sdata, &local->interfaces, list)
ieee80211_disable_keys(sdata);
/* tear down aggregation sessions and remove STAs */
mutex_lock(&local->sta_mtx);
list_for_each_entry(sta, &local->sta_list, list) {
@ -117,100 +89,25 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
WARN_ON(drv_sta_state(local, sta->sdata, sta,
state, state - 1));
}
mesh_plink_quiesce(sta);
}
mutex_unlock(&local->sta_mtx);
/* remove all interfaces */
list_for_each_entry(sdata, &local->interfaces, list) {
static u8 zero_addr[ETH_ALEN] = {};
u32 changed = 0;
if (!ieee80211_sdata_running(sdata))
continue;
switch (sdata->vif.type) {
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_MONITOR:
/* skip these */
continue;
case NL80211_IFTYPE_STATION:
if (sdata->vif.bss_conf.assoc)
changed = BSS_CHANGED_ASSOC |
BSS_CHANGED_BSSID |
BSS_CHANGED_IDLE;
break;
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_MESH_POINT:
if (sdata->vif.bss_conf.enable_beacon)
changed = BSS_CHANGED_BEACON_ENABLED;
break;
default:
break;
}
ieee80211_quiesce(sdata);
sdata->suspend_bss_conf = sdata->vif.bss_conf;
memset(&sdata->vif.bss_conf, 0, sizeof(sdata->vif.bss_conf));
sdata->vif.bss_conf.idle = true;
if (sdata->suspend_bss_conf.bssid)
sdata->vif.bss_conf.bssid = zero_addr;
/* disable beaconing or remove association */
ieee80211_bss_info_change_notify(sdata, changed);
if (sdata->vif.type == NL80211_IFTYPE_AP &&
rcu_access_pointer(sdata->u.ap.beacon))
drv_stop_ap(local, sdata);
if (local->use_chanctx) {
struct ieee80211_chanctx_conf *conf;
mutex_lock(&local->chanctx_mtx);
conf = rcu_dereference_protected(
sdata->vif.chanctx_conf,
lockdep_is_held(&local->chanctx_mtx));
if (conf) {
ctx = container_of(conf,
struct ieee80211_chanctx,
conf);
drv_unassign_vif_chanctx(local, sdata, ctx);
}
mutex_unlock(&local->chanctx_mtx);
}
drv_remove_interface(local, sdata);
}
sdata = rtnl_dereference(local->monitor_sdata);
if (sdata) {
if (local->use_chanctx) {
struct ieee80211_chanctx_conf *conf;
mutex_lock(&local->chanctx_mtx);
conf = rcu_dereference_protected(
sdata->vif.chanctx_conf,
lockdep_is_held(&local->chanctx_mtx));
if (conf) {
ctx = container_of(conf,
struct ieee80211_chanctx,
conf);
drv_unassign_vif_chanctx(local, sdata, ctx);
}
mutex_unlock(&local->chanctx_mtx);
}
if (sdata)
drv_remove_interface(local, sdata);
}
mutex_lock(&local->chanctx_mtx);
list_for_each_entry(ctx, &local->chanctx_list, list)
drv_remove_chanctx(local, ctx);
mutex_unlock(&local->chanctx_mtx);
/*
* We disconnected on all interfaces before suspend, all channel
* contexts should be released.
*/
WARN_ON(!list_empty(&local->chanctx_list));
/* stop hardware - this must stop RX */
if (local->open_count)

26
net/mac80211/util.c
View File

@ -1534,11 +1534,6 @@ int ieee80211_reconfig(struct ieee80211_local *local)
BSS_CHANGED_IDLE |
BSS_CHANGED_TXPOWER;
#ifdef CONFIG_PM
if (local->resuming && !reconfig_due_to_wowlan)
sdata->vif.bss_conf = sdata->suspend_bss_conf;
#endif
switch (sdata->vif.type) {
case NL80211_IFTYPE_STATION:
changed |= BSS_CHANGED_ASSOC |
@ -1678,28 +1673,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
mb();
local->resuming = false;
list_for_each_entry(sdata, &local->interfaces, list) {
switch(sdata->vif.type) {
case NL80211_IFTYPE_STATION:
ieee80211_sta_restart(sdata);
break;
case NL80211_IFTYPE_ADHOC:
ieee80211_ibss_restart(sdata);
break;
case NL80211_IFTYPE_MESH_POINT:
ieee80211_mesh_restart(sdata);
break;
default:
break;
}
}
mod_timer(&local->sta_cleanup, jiffies + 1);
mutex_lock(&local->sta_mtx);
list_for_each_entry(sta, &local->sta_list, list)
mesh_plink_restart(sta);
mutex_unlock(&local->sta_mtx);
#else
WARN_ON(1);
#endif