#ifndef _NF_CONNTRACK_TCP_H #define _NF_CONNTRACK_TCP_H /* TCP tracking. */ /* This is exposed to userspace (ctnetlink) */ enum tcp_conntrack { TCP_CONNTRACK_NONE, TCP_CONNTRACK_SYN_SENT, TCP_CONNTRACK_SYN_RECV, TCP_CONNTRACK_ESTABLISHED, TCP_CONNTRACK_FIN_WAIT, TCP_CONNTRACK_CLOSE_WAIT, TCP_CONNTRACK_LAST_ACK, TCP_CONNTRACK_TIME_WAIT, TCP_CONNTRACK_CLOSE, TCP_CONNTRACK_LISTEN, TCP_CONNTRACK_MAX, TCP_CONNTRACK_IGNORE }; /* Window scaling is advertised by the sender */ #define IP_CT_TCP_FLAG_WINDOW_SCALE 0x01 /* SACK is permitted by the sender */ #define IP_CT_TCP_FLAG_SACK_PERM 0x02 /* This sender sent FIN first */ #define IP_CT_TCP_FLAG_CLOSE_INIT 0x04 /* Be liberal in window checking */ #define IP_CT_TCP_FLAG_BE_LIBERAL 0x08 struct nf_ct_tcp_flags { u_int8_t flags; u_int8_t mask; }; #endif /* _NF_CONNTRACK_TCP_H */