Add support for setting SSID hiding mode through set_ap()

src/ap/beacon.c

@@ -530,6 +530,17 @@ void ieee802_11_set_beacon(struct hostapd_data *hapd)
 		(hapd->conf->ieee802_1x &&
 		 (hapd->conf->default_wep_key_len ||
 		  hapd->conf->individual_wep_key_len));
+	switch (hapd->conf->ignore_broadcast_ssid) {
+	case 0:
+		params.hide_ssid = NO_SSID_HIDING;
+		break;
+	case 1:
+		params.hide_ssid = HIDDEN_SSID_ZERO_LEN;
+		break;
+	case 2:
+		params.hide_ssid = HIDDEN_SSID_ZERO_CONTENTS;
+		break;
+	}
 	if (hostapd_drv_set_ap(hapd, &params))
 		wpa_printf(MSG_ERROR, "Failed to set beacon parameters");
 

src/drivers/driver.h

@@ -500,6 +500,12 @@ struct wpa_driver_associate_params {
 	int uapsd;
 };
 
+enum hide_ssid {
+	NO_SSID_HIDING,
+	HIDDEN_SSID_ZERO_LEN,
+	HIDDEN_SSID_ZERO_CONTENTS
+};
+
 struct wpa_driver_ap_params {
 	/**
 	 * head - Beacon head from IEEE 802.11 header to IEs before TIM IE
@@ -541,6 +547,11 @@ struct wpa_driver_ap_params {
 	 */
 	size_t ssid_len;
 
+	/**
+	 * hide_ssid - Whether to hide the SSID
+	 */
+	enum hide_ssid hide_ssid;
+
 	/**
 	 * pairwise_ciphers - WPA_CIPHER_* bitfield
 	 */

src/drivers/driver_nl80211.c

@@ -3852,6 +3852,20 @@ static int wpa_driver_nl80211_set_ap(void *priv,
 	NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
 	NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
 		params->ssid);
+	switch (params->hide_ssid) {
+	case NO_SSID_HIDING:
+		NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
+			    NL80211_HIDDEN_SSID_NOT_IN_USE);
+		break;
+	case HIDDEN_SSID_ZERO_LEN:
+		NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
+			    NL80211_HIDDEN_SSID_ZERO_LEN);
+		break;
+	case HIDDEN_SSID_ZERO_CONTENTS:
+		NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
+			    NL80211_HIDDEN_SSID_ZERO_CONTENTS);
+		break;
+	}
 	if (params->privacy)
 		NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
 	if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==