HS 2.0R2 AP: Update HS 2.0 Indication element to Release 2

The HS 2.0 Indication element from hostapd now includes the release
number field and the new ANQP Domain ID field. This ID can be configured
with anqp_domain_id parameter in hostapd.conf.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>

hostapd/config_file.c

@@ -2810,6 +2810,8 @@ static int hostapd_config_fill(struct hostapd_config *conf,
 			bss->hs20 = atoi(pos);
 		} else if (os_strcmp(buf, "disable_dgaf") == 0) {
 			bss->disable_dgaf = atoi(pos);
+		} else if (os_strcmp(buf, "anqp_domain_id") == 0) {
+			bss->anqp_domain_id = atoi(pos);
 		} else if (os_strcmp(buf, "hs20_oper_friendly_name") == 0) {
 			if (hs20_parse_oper_friendly_name(bss, pos, line) < 0)
 				errors++;

hostapd/hostapd.conf

@@ -1582,6 +1582,11 @@ own_ip_addr=127.0.0.1
 # forging such frames to other stations in the BSS.
 #disable_dgaf=1
 
+# ANQP Domain ID (0..65535)
+# An identifier for a set of APs in an ESS that share the same common ANQP
+# information. 0 = Some of the ANQP information is unique to this AP (default).
+#anqp_domain_id=1234
+
 # Operator Friendly Name
 # This parameter can be used to configure one or more Operator Friendly Name
 # Duples. Each entry has a two or three character language code (ISO-639)

src/ap/ap_config.h

@@ -455,6 +455,7 @@ struct hostapd_bss_config {
 #ifdef CONFIG_HS20
 	int hs20;
 	int disable_dgaf;
+	u16 anqp_domain_id;
 	unsigned int hs20_oper_friendly_name_count;
 	struct hostapd_lang_string *hs20_oper_friendly_name;
 	u8 *hs20_wan_metrics;

src/ap/hs20.c

@@ -18,14 +18,21 @@
 
 u8 * hostapd_eid_hs20_indication(struct hostapd_data *hapd, u8 *eid)
 {
+	u8 conf;
 	if (!hapd->conf->hs20)
 		return eid;
 	*eid++ = WLAN_EID_VENDOR_SPECIFIC;
-	*eid++ = 5;
+	*eid++ = 7;
 	WPA_PUT_BE24(eid, OUI_WFA);
 	eid += 3;
 	*eid++ = HS20_INDICATION_OUI_TYPE;
-	/* Hotspot Configuration: DGAF Enabled */
-	*eid++ = hapd->conf->disable_dgaf ? 0x01 : 0x00;
+	conf = HS20_VERSION; /* Release Number */
+	conf |= HS20_ANQP_DOMAIN_ID_PRESENT;
+	if (hapd->conf->disable_dgaf)
+		conf |= HS20_DGAF_DISABLED;
+	*eid++ = conf;
+	WPA_PUT_LE16(eid, hapd->conf->anqp_domain_id);
+	eid += 2;
+
 	return eid;
 }