Allow driver wrappers to indicate whether HT info is known

This is needed to be able to figure out whether the driver is known
not to support HT.

src/drivers/driver.h

@@ -60,6 +60,8 @@ struct hostapd_channel_data {
 	u8 max_tx_power;
 };
 
+#define HOSTAPD_MODE_FLAG_HT_INFO_KNOWN BIT(0)
+
 /**
  * struct hostapd_hw_modes - Supported hardware mode information
  */
@@ -103,6 +105,8 @@ struct hostapd_hw_modes {
 	 * a_mpdu_params - A-MPDU (IEEE 802.11n) parameters
 	 */
 	u8 a_mpdu_params;
+
+	unsigned int flags; /* HOSTAPD_MODE_FLAG_* */
 };
 
 

src/drivers/driver_nl80211.c

@@ -3657,6 +3657,7 @@ static int phy_info_handler(struct nl_msg *msg, void *arg)
 
 		mode = &phy_info->modes[*(phy_info->num_modes)];
 		memset(mode, 0, sizeof(*mode));
+		mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN;
 		*(phy_info->num_modes) += 1;
 
 		nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),