+static void __ieee80211_key_replace(struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta,
+ struct ieee80211_key *key,
+ 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 && key && new->conf.keyidx != key->conf.keyidx);
+
+ if (key)
+ idx = key->conf.keyidx;
+ else
+ idx = new->conf.keyidx;
+
+ defkey = key && sdata->default_key == key;
+
+ 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 (key) {
+ ieee80211_key_mark_hw_accel_off(key);
+ /*
+ * We'll use an empty list to indicate that the key
+ * has already been removed.
+ */
+ list_del_init(&key->list);
+ }
+}
+
+void ieee80211_key_link(struct ieee80211_key *key,
+ struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta)
+{
+ struct ieee80211_key *old_key;
+ int idx;
+
+ ASSERT_RTNL();
+ might_sleep();
+
+ BUG_ON(!sdata);
+ BUG_ON(!key);
+
+ idx = key->conf.keyidx;
+ key->local = sdata->local;
+ key->sdata = sdata;
+ key->sta = sta;
+
+ ieee80211_debugfs_key_add(key->local, key);