msg_destport
msg_set_origport(hdr, msg_destport(_hdr));
dport = msg_destport(buf_msg(skb));
if (msg_destport(buf_msg(_skb)) == dport) {
return msg_destport(&tsk->phdr);
i += scnprintf(buf + i, sz - i, " %u", msg_destport(hdr));