TSACK_F_ENCLOSESEG
(TSACK_F_DUPSEG | TSACK_F_ENCLOSESEG);
tp->sack_flags |= (TSACK_F_DUPSEG | TSACK_F_ENCLOSESEG);
if ((tp->sack_flags & TSACK_F_ENCLOSESEG) &&
tp->sack_flags &= ~TSACK_F_ENCLOSESEG;
~(TSACK_F_DUPSEG | TSACK_F_ENCLOSESEG | TSACK_F_SACKLEFT);
(TSACK_F_DUPSEG | TSACK_F_ENCLOSESEG | TSACK_F_SACKLEFT)) ||
if (tp->sack_flags & TSACK_F_ENCLOSESEG) {
~(TSACK_F_DUPSEG | TSACK_F_ENCLOSESEG | TSACK_F_SACKLEFT);