Function tcp_timer_activate

freebsd/netinet/tcp_timer.c:892–941

}

void
tcp_timer_activate(struct tcpcb *tp, uint32_t timer_type, u_int delta)
{
	struct callout *t_callout;
	callout_func_t *f_callout;
	struct inpcb *inp = tp->t_inpcb;
	int cpu = inp_to_cpuid(inp);

#ifdef TCP_OFFLOAD
	if (tp->t_flags & TF_TOE)
		return;
#endif

	if (tp->t_timers->tt_flags & TT_STOPPED)
		return;

	switch (timer_type) {
		case TT_DELACK:
			t_callout = &tp->t_timers->tt_delack;
			f_callout = tcp_timer_delack;
			break;
		case TT_REXMT:
			t_callout = &tp->t_timers->tt_rexmt;
			f_callout = tcp_timer_rexmt;
			break;
		case TT_PERSIST:
			t_callout = &tp->t_timers->tt_persist;
			f_callout = tcp_timer_persist;
			break;
		case TT_KEEP:
			t_callout = &tp->t_timers->tt_keep;
			f_callout = tcp_timer_keep;
			break;
		case TT_2MSL:
			t_callout = &tp->t_timers->tt_2msl;
			f_callout = tcp_timer_2msl;
			break;
		default:
			if (tp->t_fb->tfb_tcp_timer_activate) {
				tp->t_fb->tfb_tcp_timer_activate(tp, timer_type, delta);
				return;
			}
			panic("tp %p bad timer_type %#x", tp, timer_type);
		}
	if (delta == 0) {
		callout_stop(t_callout);
	} else {
		callout_reset_on(t_callout, delta, f_callout, tp, cpu);
	}
}

int
tcp_timer_active(struct tcpcb *tp, uint32_t timer_type)