TCPOPT_FASTOPEN 3928 net/ipv4/tcp_input.c case TCPOPT_FASTOPEN: TCPOPT_FASTOPEN 539 net/ipv4/tcp_output.c *p++ = TCPOPT_FASTOPEN; TCPOPT_FASTOPEN 1098 net/sched/sch_cake.c case TCPOPT_FASTOPEN: