| David Howells | 94d0ec5 | 2012-10-09 09:48:54 +0100 | [diff] [blame] | 1 | #ifndef _UAPI_NF_CONNTRACK_TCP_H |
| 2 | #define _UAPI_NF_CONNTRACK_TCP_H |
| 3 | /* TCP tracking. */ |
| 4 | |
| 5 | #include <linux/types.h> |
| 6 | |
| 7 | /* This is exposed to userspace (ctnetlink) */ |
| 8 | enum tcp_conntrack { |
| 9 | TCP_CONNTRACK_NONE, |
| 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, |
| 17 | TCP_CONNTRACK_CLOSE, |
| 18 | TCP_CONNTRACK_LISTEN, /* obsolete */ |
| 19 | #define TCP_CONNTRACK_SYN_SENT2 TCP_CONNTRACK_LISTEN |
| 20 | TCP_CONNTRACK_MAX, |
| 21 | TCP_CONNTRACK_IGNORE, |
| 22 | TCP_CONNTRACK_RETRANS, |
| 23 | TCP_CONNTRACK_UNACK, |
| 24 | TCP_CONNTRACK_TIMEOUT_MAX |
| 25 | }; |
| 26 | |
| 27 | /* Window scaling is advertised by the sender */ |
| 28 | #define IP_CT_TCP_FLAG_WINDOW_SCALE 0x01 |
| 29 | |
| 30 | /* SACK is permitted by the sender */ |
| 31 | #define IP_CT_TCP_FLAG_SACK_PERM 0x02 |
| 32 | |
| 33 | /* This sender sent FIN first */ |
| 34 | #define IP_CT_TCP_FLAG_CLOSE_INIT 0x04 |
| 35 | |
| 36 | /* Be liberal in window checking */ |
| 37 | #define IP_CT_TCP_FLAG_BE_LIBERAL 0x08 |
| 38 | |
| 39 | /* Has unacknowledged data */ |
| 40 | #define IP_CT_TCP_FLAG_DATA_UNACKNOWLEDGED 0x10 |
| 41 | |
| 42 | /* The field td_maxack has been set */ |
| 43 | #define IP_CT_TCP_FLAG_MAXACK_SET 0x20 |
| 44 | |
| 45 | struct nf_ct_tcp_flags { |
| 46 | __u8 flags; |
| 47 | __u8 mask; |
| 48 | }; |
| 49 | |
| 50 | |
| 51 | #endif /* _UAPI_NF_CONNTRACK_TCP_H */ |