Add Mobility-Domain-Id into RADIUS messages

This adds hostapd support for the new Mobility-Domain-Id attribute
defined in RFC 7268. This attribute contains the mobility domain id and
it is added whenever the station negotiates use of FT.

Signed-off-by: Jouni Malinen <j@w1.fi>

src/ap/ieee802_1x.c

@@ -357,6 +357,21 @@ static int add_common_radius_sta_attr(struct hostapd_data *hapd,
 		}
 	}
 
+#ifdef CONFIG_IEEE80211R
+	if (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
+	    sta->wpa_sm &&
+	    (wpa_key_mgmt_ft(wpa_auth_sta_key_mgmt(sta->wpa_sm)) ||
+	     sta->auth_alg == WLAN_AUTH_FT) &&
+	    !hostapd_config_get_radius_attr(req_attr,
+					    RADIUS_ATTR_MOBILITY_DOMAIN_ID) &&
+	    !radius_msg_add_attr_int32(msg, RADIUS_ATTR_MOBILITY_DOMAIN_ID,
+				       WPA_GET_BE16(
+					       hapd->conf->mobility_domain))) {
+		wpa_printf(MSG_ERROR, "Could not add Mobility-Domain-Id");
+		return -1;
+	}
+#endif /* CONFIG_IEEE80211R */
+
 	return 0;
 }
 

src/radius/radius.c

@@ -233,6 +233,8 @@ static struct radius_attr_type radius_attrs[] =
 	{ RADIUS_ATTR_NAS_IPV6_ADDRESS, "NAS-IPv6-Address", RADIUS_ATTR_IPV6 },
 	{ RADIUS_ATTR_ERROR_CAUSE, "Error-Cause", RADIUS_ATTR_INT32 },
 	{ RADIUS_ATTR_EAP_KEY_NAME, "EAP-Key-Name", RADIUS_ATTR_HEXDUMP },
+	{ RADIUS_ATTR_MOBILITY_DOMAIN_ID, "Mobility-Domain-Id",
+	  RADIUS_ATTR_INT32 },
 };
 #define RADIUS_ATTRS ARRAY_SIZE(radius_attrs)
 

src/radius/radius.h

@@ -92,6 +92,7 @@ enum { RADIUS_ATTR_USER_NAME = 1,
        RADIUS_ATTR_NAS_IPV6_ADDRESS = 95,
        RADIUS_ATTR_ERROR_CAUSE = 101,
        RADIUS_ATTR_EAP_KEY_NAME = 102,
+       RADIUS_ATTR_MOBILITY_DOMAIN_ID = 177,
 };