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mac80211: add sta_state callback

Browse source 
(based on Eliad's patch)

Add a callback to notify the low-level driver whenever
the state of a station changes. The driver is only
notified when the station is actually in the mac80211
hash table, not for pre-insert state transitions.

To allow the driver to replace sta_add/remove calls
with this, call extra transitions with the NOTEXIST
state.

This callback can fail, so we need to be careful in
handling it when a station is inserted, particularly
in the IBSS case where we still keep the station entry
around for mac80211 purposes.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2012-01-20 13:55:21 +01:00 • committed by John W. Linville
parent 71ec375c75
commit f09603a259
8 changed files with 202 additions and 36 deletions
Download patch file Download diff file Expand all files Collapse all files

10
net/mac80211/pm.c
View file

@ -97,9 +97,17 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
/* tear down aggregation sessions and remove STAs */
mutex_lock(&local->sta_mtx);
list_for_each_entry(sta, &local->sta_list, list) {
if (sta->uploaded)
if (sta->uploaded) {
enum ieee80211_sta_state state;
drv_sta_remove(local, sta->sdata, &sta->sta);
state = sta->sta_state;
for (; state > IEEE80211_STA_NOTEXIST; state--)
WARN_ON(drv_sta_state(local, sdata, sta,
state, state - 1));
}
mesh_plink_quiesce(sta);
}
mutex_unlock(&local->sta_mtx);