OPTION_TS
if (unlikely(!(OPTION_TS & opts->options)))
opts->options |= OPTION_TS;
opts->options |= OPTION_TS;
bool has_ts = opts->options & OPTION_TS;
opts->options &= ~OPTION_TS;
if (likely(OPTION_TS & options)) {
if ((opts->options & (OPTION_SACK_ADVERTISE | OPTION_TS)) ==
opts->options |= OPTION_TS;