TCPOLEN_SACK_PERMITTED
if (optlen != TCPOLEN_SACK_PERMITTED)
if (optlen != TCPOLEN_SACK_PERMITTED) {
if (TCP_MAXOLEN - optlen < TCPOLEN_SACK_PERMITTED)
optlen += TCPOLEN_SACK_PERMITTED;
*optp++ = TCPOLEN_SACK_PERMITTED;
optlen += PADTCPOLEN(TCPOLEN_SACK_PERMITTED);
optlen += PADTCPOLEN(TCPOLEN_SACK_PERMITTED);
if (ol == TCPOLEN_SACK_PERMITTED)
if (optlen == TCPOLEN_SACK_PERMITTED)