TCP_MAXRXTSHIFT
if (tp->t_rxtshift < TCP_MAXRXTSHIFT)
int tcp_syn_backoff[TCP_MAXRXTSHIFT + 1] =
int tcp_syn_backoff_low[TCP_MAXRXTSHIFT + 1] =
int tcp_backoff[TCP_MAXRXTSHIFT + 1] =
if (tp->t_rxtshift == TCP_MAXRXTSHIFT &&
if (++tp->t_rxtshift > TCP_MAXRXTSHIFT) {
tp->t_rxtshift = TCP_MAXRXTSHIFT;
if (tp->t_rxtshift > TCP_MAXRXTSHIFT / 4) {