}
 
 
+static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
+                                          struct ieee80211_vif *vif,
+                                          enum nl80211_iftype newtype)
+{
+       wiphy_debug(hw->wiphy,
+                   "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
+                   __func__, vif->type, newtype, vif->addr);
+       hwsim_check_magic(vif);
+
+       return 0;
+}
+
 static void mac80211_hwsim_remove_interface(
        struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 {
        .start = mac80211_hwsim_start,
        .stop = mac80211_hwsim_stop,
        .add_interface = mac80211_hwsim_add_interface,
+       .change_interface = mac80211_hwsim_change_interface,
        .remove_interface = mac80211_hwsim_remove_interface,
        .config = mac80211_hwsim_config,
        .configure_filter = mac80211_hwsim_configure_filter,