void tcp_retransmit_first_unacked (tcp_connection_t * tc);
void tcp_fast_retransmit_no_sack (tcp_connection_t * tc);
void tcp_fast_retransmit_sack (tcp_connection_t * tc);
void tcp_retransmit_first_unacked (tcp_connection_t * tc);
void tcp_fast_retransmit_no_sack (tcp_connection_t * tc);
void tcp_fast_retransmit_sack (tcp_connection_t * tc);