tcp_in_initial_slowstart
return tp->packets_out < 4 && !tcp_in_initial_slowstart(tp);
(tcp_in_initial_slowstart(tp) ? -1 : tp->snd_ssthresh));
if (tcp_in_initial_slowstart(tp)) {
(tcp_in_initial_slowstart(tp) ? -1 : tp->snd_ssthresh)
: (tcp_in_initial_slowstart(tp) ? -1 : tp->snd_ssthresh)
: (tcp_in_initial_slowstart(&tp->tcp) ? -1