TCP_SYN_SET 310 net/netfilter/nf_conntrack_proto_tcp.c else if (tcph->syn) return (tcph->ack ? TCP_SYNACK_SET : TCP_SYN_SET); TCP_SYN_SET 880 net/netfilter/nf_conntrack_proto_tcp.c && ct->proto.tcp.last_index == TCP_SYN_SET TCP_SYN_SET 920 net/netfilter/nf_conntrack_proto_tcp.c && ct->proto.tcp.last_index == TCP_SYN_SET)