nl80211: Do not change iftype for static AP interface

Some devices have limitations which do not allow changing virtual
interface mode from AP to station or vice versa. To work around this,
check if such AP interface is not dynamic. If such an interface is
enumarated, just set ifmode to AP and avoid setting nlmode to default
station mode on deinit.

Signed-off-by: Avinash Patil <avinashapatil@gmail.com>

src/drivers/driver_nl80211.c

@@ -232,6 +232,7 @@ struct i802_bss {
 	unsigned int in_deinit:1;
 	unsigned int wdev_id_set:1;
 	unsigned int added_if:1;
+	unsigned int static_ap:1;
 
 	u8 addr[ETH_ALEN];
 
@@ -4763,6 +4764,9 @@ wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 	bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
 	drv->global->if_add_wdevid_set = 0;
 
+	if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
+		bss->static_ap = 1;
+
 	if (wpa_driver_nl80211_capa(drv))
 		return -1;
 
@@ -4778,7 +4782,7 @@ wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 	if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
 		drv->start_mode_ap = 1;
 
-	if (drv->hostapd)
+	if (drv->hostapd || bss->static_ap)
 		nlmode = NL80211_IFTYPE_AP;
 	else if (bss->if_dynamic)
 		nlmode = nl80211_get_ifmode(bss);