-/*
- * Retransmission smoothing constants.
- * Smoothed round trip time is updated by
- * tp->t_srtt = (tcp_alpha * tp->t_srtt) + ((1 - tcp_alpha) * tp->t_rtt)
- * each time a new value of tp->t_rtt is available. The initial
- * retransmit timeout is then based on
- * tp->t_timer[TCPT_REXMT] = tcp_beta * tp->t_srtt;
- * limited, however to be at least TCPTV_REXMTLO and at most TCPTV_REXMTHI.
- */
-float tcp_alpha, tcp_beta;
-
-/*
- * Initial values of tcp_alpha and tcp_beta.
- * These are conservative: averaging over a long
- * period of time, and allowing for large individual deviations from
- * tp->t_srtt.
- */
-#define TCP_ALPHA 0.9
-#define TCP_BETA 2.0
-