mac80211/cfg80211: add station events

When, for instance, a new IBSS peer is found, userspace
wants to be notified. Add events for all new stations
that mac80211 learns about.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index f039e76..47da552 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -359,6 +359,7 @@
 {
 	struct ieee80211_local *local = sta->local;
 	struct ieee80211_sub_if_data *sdata = sta->sdata;
+	struct station_info sinfo;
 	unsigned long flags;
 	int err = 0;
 
@@ -408,6 +409,10 @@
 
 	spin_unlock_irqrestore(&local->sta_lock, flags);
 
+	sinfo.filled = 0;
+	sinfo.generation = local->sta_generation;
+	cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_ATOMIC);
+
 #ifdef CONFIG_MAC80211_DEBUGFS
 	/*
 	 * Debugfs entry adding might sleep, so schedule process