PFRKE_FLAG_MARK
if (ISSET(p->pfrke_flags, PFRKE_FLAG_MARK))
SET(p->pfrke_flags, PFRKE_FLAG_MARK);
ke->pfrke_flags &= ~PFRKE_FLAG_MARK;
if (ke->pfrke_flags & PFRKE_FLAG_MARK)
q->pfrke_flags |= PFRKE_FLAG_MARK;
p->pfrke_flags &= ~PFRKE_FLAG_MARK;
else if (p->pfrke_flags & PFRKE_FLAG_MARK)
!(p->pfrke_flags & PFRKE_FLAG_MARK)) {
p->pfrke_flags |= PFRKE_FLAG_MARK;
if (p->pfrke_flags & PFRKE_FLAG_MARK) {
p->pfrke_flags |= PFRKE_FLAG_MARK;