mac80211: add sta_state callback
(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>
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index d4966e8..8f8b4ec 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1184,8 +1184,16 @@
/* add STAs back */
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;
+
WARN_ON(drv_sta_add(local, sta->sdata, &sta->sta));
+
+ for (state = IEEE80211_STA_NOTEXIST;
+ state < sta->sta_state - 1; state++)
+ WARN_ON(drv_sta_state(local, sta->sdata, sta,
+ state, state + 1));
+ }
}
mutex_unlock(&local->sta_mtx);