hostapd: Allow FTM functionality to be published

Add configuration options that control publishing of fine timing
measurement (FTM) responder and initiator functionality via bits 70, 71
of Extended Capabilities element. Typically, FTM functionality is
controlled by a location framework outside hostapd. When framework is
activated, it will use hostapd to configure the AP to publish the FTM
functionality. See IEEE P802.11-REVmc/D7.0, 9.4.2.27.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>

hostapd/config_file.c

@@ -3487,6 +3487,10 @@ static int hostapd_config_fill(struct hostapd_config *conf,
 				WLAN_RRM_CAPS_NEIGHBOR_REPORT;
 	} else if (os_strcmp(buf, "gas_address3") == 0) {
 		bss->gas_address3 = atoi(pos);
+	} else if (os_strcmp(buf, "ftm_responder") == 0) {
+		bss->ftm_responder = atoi(pos);
+	} else if (os_strcmp(buf, "ftm_initiator") == 0) {
+		bss->ftm_initiator = atoi(pos);
 	} else {
 		wpa_printf(MSG_ERROR,
 			   "Line %d: unknown configuration item '%s'",

hostapd/hostapd.conf

@@ -1916,6 +1916,16 @@ own_ip_addr=127.0.0.1
 # Enable neighbor report via radio measurements
 #rrm_neighbor_report=1
 
+# Publish fine timing measurement (FTM) responder functionality
+# This parameter only controls publishing via Extended Capabilities element.
+# Actual functionality is managed outside hostapd.
+#ftm_responder=0
+
+# Publish fine timing measurement (FTM) initiator functionality
+# This parameter only controls publishing via Extended Capabilities element.
+# Actual functionality is managed outside hostapd.
+#ftm_initiator=0
+
 ##### TESTING OPTIONS #########################################################
 #
 # The options in this section are only available when the build configuration

src/ap/ap_config.h

@@ -592,6 +592,9 @@ struct hostapd_bss_config {
 #ifdef CONFIG_MBO
 	int mbo_enabled;
 #endif /* CONFIG_MBO */
+
+	int ftm_responder;
+	int ftm_initiator;
 };
 
 

src/ap/ieee802_11_shared.c

@@ -218,6 +218,12 @@ static void hostapd_ext_capab_byte(struct hostapd_data *hapd, u8 *pos, int idx)
 		if (hapd->conf->ssid.utf8_ssid)
 			*pos |= 0x01; /* Bit 48 - UTF-8 SSID */
 		break;
+	case 8: /* Bits 64-71 */
+		if (hapd->conf->ftm_responder)
+			*pos |= 0x40; /* Bit 70 - FTM responder */
+		if (hapd->conf->ftm_initiator)
+			*pos |= 0x80; /* Bit 71 - FTM initiator */
+		break;
 	}
 }
 
@@ -237,6 +243,9 @@ u8 * hostapd_eid_ext_capab(struct hostapd_data *hapd, u8 *eid)
 		len = 1;
 	if (len < 7 && hapd->conf->ssid.utf8_ssid)
 		len = 7;
+	if (len < 9 &&
+	    (hapd->conf->ftm_initiator || hapd->conf->ftm_responder))
+		len = 9;
 #ifdef CONFIG_WNM
 	if (len < 4)
 		len = 4;