TS_OPT_SACK        75 net/ipv4/syncookies.c 		options |= TS_OPT_SACK;
TS_OPT_SACK       249 net/ipv4/syncookies.c 	tcp_opt->sack_ok = (options & TS_OPT_SACK) ? TCP_SACK_SEEN : 0;