tcp_passive_fastopen  982 net/ipv4/tcp.c 	    !tcp_passive_fastopen(sk)) {
tcp_passive_fastopen 1231 net/ipv4/tcp.c 	    !tcp_passive_fastopen(sk)) {
tcp_passive_fastopen 3858 net/ipv4/tcp_output.c 		if (unlikely(tcp_passive_fastopen(sk)))