1 #ifndef _NF_CONNTRACK_TCP_H
2 #define _NF_CONNTRACK_TCP_H
5 #include <linux/types.h>
7 /* This is exposed to userspace (ctnetlink) */
10 TCP_CONNTRACK_SYN_SENT
,
11 TCP_CONNTRACK_SYN_RECV
,
12 TCP_CONNTRACK_ESTABLISHED
,
13 TCP_CONNTRACK_FIN_WAIT
,
14 TCP_CONNTRACK_CLOSE_WAIT
,
15 TCP_CONNTRACK_LAST_ACK
,
16 TCP_CONNTRACK_TIME_WAIT
,
18 TCP_CONNTRACK_LISTEN
, /* obsolete */
19 #define TCP_CONNTRACK_SYN_SENT2 TCP_CONNTRACK_LISTEN
24 /* Window scaling is advertised by the sender */
25 #define IP_CT_TCP_FLAG_WINDOW_SCALE 0x01
27 /* SACK is permitted by the sender */
28 #define IP_CT_TCP_FLAG_SACK_PERM 0x02
30 /* This sender sent FIN first */
31 #define IP_CT_TCP_FLAG_CLOSE_INIT 0x04
33 /* Be liberal in window checking */
34 #define IP_CT_TCP_FLAG_BE_LIBERAL 0x08
36 /* Has unacknowledged data */
37 #define IP_CT_TCP_FLAG_DATA_UNACKNOWLEDGED 0x10
39 /* The field td_maxack has been set */
40 #define IP_CT_TCP_FLAG_MAXACK_SET 0x20
42 struct nf_ct_tcp_flags
{
48 #endif /* _NF_CONNTRACK_TCP_H */