Do not clear PMKSA cache on all network block parameter changes

The bssid and priority parameters in a network block do not have any
effect on the validity of a PMKSA cache entry, so avoid flushing the
PMKSA cache when only these parameters are changed. This is mainly
to allow forced roaming or network selection changes without causing
a disconnection if the changes are done during RSN association that
used EAP.

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

wpa_supplicant/ctrl_iface.c

@@ -2056,7 +2056,9 @@ static int wpa_supplicant_ctrl_iface_set_network(
 		return -1;
 	}
 
-	wpa_sm_pmksa_cache_flush(wpa_s->wpa, ssid);
+	if (os_strcmp(name, "bssid") != 0 &&
+	    os_strcmp(name, "priority") != 0)
+		wpa_sm_pmksa_cache_flush(wpa_s->wpa, ssid);
 
 	if (wpa_s->current_ssid == ssid || wpa_s->current_ssid == NULL) {
 		/*