SAE: Special test mode sae_pwe=3 for looping with password identifier

The new sae_pwe=3 mode can be used to test non-compliant behavior with
SAE Password Identifiers. This can be used to force use of
hunting-and-pecking loop for PWE derivation when Password Identifier is
used. This is not allowed by the standard and as such, this
functionality is aimed at compliance testing.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>

src/ap/ieee802_11_shared.c

@@ -1016,6 +1016,7 @@ u8 * hostapd_eid_rsnxe(struct hostapd_data *hapd, u8 *eid, size_t len)
 	    !wpa_key_mgmt_sae(hapd->conf->wpa_key_mgmt) ||
 	    (hapd->conf->sae_pwe != 1 && hapd->conf->sae_pwe != 2 &&
 	     !hostapd_sae_pw_id_in_use(hapd->conf)) ||
+	    hapd->conf->sae_pwe == 3 ||
 	    len < 3)
 		return pos;