TF_ACKNOW
tp->t_flags |= TF_ACKNOW;
t_flags |= TF_ACKNOW;
t_flags |= TF_ACKNOW;
if (t_flags & TF_ACKNOW)
if (tp->t_flags & TF_ACKNOW) {
tp->t_flags |= TF_ACKNOW;
tp->t_flags |= TF_ACKNOW;
tp->t_flags |= TF_ACKNOW;
if (tp->t_flags & TF_ACKNOW)
tp->t_flags |= TF_ACKNOW;
tp->t_flags |= TF_ACKNOW;
if (needoutput || (tp->t_flags & TF_ACKNOW)) {
tp->t_flags |= TF_ACKNOW;
tp->t_flags |= TF_ACKNOW;
if (tp->t_flags & TF_ACKNOW)
tp->t_flags &= ~TF_ACKNOW;
if (tp->t_flags & TF_ACKNOW)
tp->t_flags |= TF_ACKNOW;