tcp_push_and_replace
tcp_push_and_replace(lc, le, m);
tcp_push_and_replace(lc, le, m);
tcp_push_and_replace(lc, le, m);
tcp_push_and_replace(lc, le, m);
tcp_push_and_replace(lc, le, m);
tcp_push_and_replace(lc, le, m);
tcp_push_and_replace(lc, le, m);