+static void __ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata,
+ int idx)
+{
+ struct ieee80211_key *key = NULL;
+
+ if (idx >= 0 && idx < NUM_DEFAULT_KEYS)
+ key = sdata->keys[idx];
+
+ rcu_assign_pointer(sdata->default_key, key);
+
+ if (key)
+ add_todo(key, KEY_FLAG_TODO_DEFKEY);
+}
+
+void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&sdata->local->key_lock, flags);
+ __ieee80211_set_default_key(sdata, idx);
+ spin_unlock_irqrestore(&sdata->local->key_lock, flags);
+}
+
+
+static void __ieee80211_key_replace(struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta,
+ struct ieee80211_key *old,
+ struct ieee80211_key *new)
+{
+ int idx, defkey;
+
+ if (new)
+ list_add(&new->list, &sdata->key_list);
+
+ if (sta) {
+ rcu_assign_pointer(sta->key, new);
+ } else {
+ WARN_ON(new && old && new->conf.keyidx != old->conf.keyidx);
+
+ if (old)
+ idx = old->conf.keyidx;
+ else
+ idx = new->conf.keyidx;
+
+ defkey = old && sdata->default_key == old;
+
+ if (defkey && !new)
+ __ieee80211_set_default_key(sdata, -1);
+
+ rcu_assign_pointer(sdata->keys[idx], new);
+ if (defkey && new)
+ __ieee80211_set_default_key(sdata, new->conf.keyidx);
+ }
+
+ if (old) {
+ /*
+ * We'll use an empty list to indicate that the key
+ * has already been removed.
+ */
+ list_del_init(&old->list);
+ }
+}
+
+struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg,